Update README [skip ci]

Author: zetachang

README.md

@@ -1,4 +1,4 @@
-# Reactrb / Reactive-Ruby
+# Reactrb
 
 [![Join the chat at https://gitter.im/reactrb/chat](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/reactrb/chat?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Build Status](https://travis-ci.org/reactrb/reactrb.svg?branch=master)](https://travis-ci.org/reactrb/reactrb)
@@ -11,37 +11,67 @@
 It lets you write reactive UI components, with Ruby's elegance using the tried
 and true React.js engine. :heart:
 
-[**Visit ruby-hyperloop.io For The Full Story**](http://ruby-hyperloop.io)
+Visit [** ruby-hyperloop.io**](http://ruby-hyperloop.io) for the full story.
 
 ### Important: `react.rb` and `reactive-ruby` gems are **deprecated.** Please [read this!](#upgrading-to-reactrb)
 
 ## Installation
 
 Install the gem, or load the js library
 
-+ add `gem 'reactrb'` to your gem file or
-+ `gem install reactrb` or
-+ install (or load via cdn) [reactrb-express.js](http://github.com/reactrb/reactrb-express)
+1. Add `gem 'reactrb'` to your **Gemfile**
+2. Or `gem install reactrb`
+3. Or install (or load via cdn) from [reactrb-express.js](http://github.com/reactrb/reactrb-express)
 
-For gem installation it is highly recommended to read the [getting started](http://ruby-hyperloop.io/get_started/) and [installation](http://ruby-hyperloop.io/installation/) guides at [ruby-hyperloop.io](http://ruby-hyperloop.io)
+For gem installation it is highly recommended to read the [getting started](http://ruby-hyperloop.io/get_started/) and [installation](http://ruby-hyperloop.io/installation/) guides at [ruby-hyperloop.io.](http://ruby-hyperloop.io)
 
 ## Quick Overview
 
-Reactrb components are ruby classes that inherit from `React::Component::Base` or include `React::Component`.
+A component is a plain ruby class with a `#render` method defined.
 
-`React::Component` provides a complete DSL to generate html and event handlers, and has full set of class macros to define states, parameters, and lifecycle callbacks.
+```ruby
+class HelloMessage
+  def render
+    React.create_element("div") { "Hello World!" }
+  end
+end
 
-Each react component class has a render method that generates the markup for that component.
+puts React.render_to_static_markup(React.create_element(HelloMessage))
 
-Each react component class defines a new tag-method in the DSL that works just like built-in html tags, so react components can render other react components.
+# => '<div>Hello World!</div>'
+```
 
-As events occur, components update their state, which causes them to rerender, and perhaps pass new parameters to lower level components, thus causing them to rerender.  
+### React::Component
 
-Under the hood the actual work is effeciently done by the [React.js](http://facebook.github.io/reactrb/) engine.
+You can simply include `React::Component` to get the power of a complete DSL to generate html markup, event handlers and it also provides a full set of class macros to define states, parameters, and lifecycle callbacks.
+
+As events occur, components update their state, which causes them to rerender, and perhaps pass new parameters to lower level components, thus causing them to rerender.
+
+```ruby
+class HelloWorld < React::Component::Base
+  param :time, type: Time
+  render do
+    p do
+      span { "Hello, " }
+      input(type: :text, placeholder: "Your Name Here")
+      span { "! It is #{params.time}"}
+    end
+  end
+end
+
+every(1) do
+  Element["#example"].render do
+    HelloWorld(time: Time.now)
+  end
+end
+```
+
+Reactrb components are *isomorphic* (or *univeral*) meaning they can run on the server as well as the client.
+
+Reactrb integrates well with Rails, Sinatra, and simple static sites, and can be added to existing web pages very easily.
 
-Reactrb components are *isomorphic* meaning they can run on the server as well as the client.  This means that the initial expansion of the component tree to markup is done server side, just like ERB, or HAML templates.   Then the same code runs on the client and will respond to any events.   
+Under the hood the actual work is effeciently done by the [React.js](http://facebook.github.io/reactrb/) engine.
 
-Reactrb integrates well with Rails, Sinatra, and simple static sites, and can be added to existing web pages very easily, or it can be used to deliver complete websites.
 
 ## Why ?
 
@@ -52,14 +82,14 @@ Reactrb integrates well with Rails, Sinatra, and simple static sites, and can be
 + *Enhanced Features:* Enhanced parameter and state management and other new features
 + *Plays well with Others:* Works with other frameworks, React.js components, Rails, Sinatra and static web pages
 
-# Problems, Questions, Issues
+## Problems, Questions, Issues
 
 + [Stack Overflow](http://stackoverflow.com/questions/tagged/react.rb) tag `react.rb` for specific problems.
 + [Gitter.im](https://gitter.im/reactrb/chat) for general questions, discussion, and interactive help.
 + [Github Issues](https://github.com/reactrb/reactrb/issues) for bugs, feature enhancements, etc.
 
 
-# Upgrading to Reactrb
+## Upgrading to Reactrb
 
 The original gem `react.rb` was superceeded by `reactive-ruby`, which has had over 15,000 downloads.  This name has now been superceeded by `reactrb` (see #144 for detailed discussion on why.)
 
@@ -77,7 +107,7 @@ Follow these steps to upgrade:
 1. Replace `reactive-ruby` with `reactrb` both in **Gemfile** and any `require`s in your code.
 2. To include the React.js source, the suggested way is to add `require 'react/react-source'` before `require 'reactrb'`. This will use the copy of React.js source from `react-rails` gem.
 
-# Roadmap
+## Roadmap
 
 Upcoming will be an 0.9.x release which will deprecate a number of features and DSL elements.  [click for detailed feature list](https://github.com/reactrb/reactrb/milestones/0.9.x)
 
@@ -89,33 +119,15 @@ Please let us know either at [Gitter.im](https://gitter.im/reactrb/chat) or [via
 
 `git clone` the project.
 
-To play with some live examples cd to the project directory then
-
-2. `cd example/examples`
-2. `bundle install`
-3. `bundle exec rackup`
-4. Open `http://localhost:9292`
-
-or
-
-1. `cd example/rails-tutorial`
-2. `bundle install`
-3. `bundle exec rails s`
-4. Open `http://localhost:3000`
-
-or
-
-1. `cd example/sinatra-tutorial`
-2. `bundle install`
-3. `bundle exec rackup`
-4. Open `http://localhost:9292`
+To play with some live examples, refer to https://github.com/reactrb/reactrb-examples.
 
-Note that these are very simple examples, for the purpose of showing how to configure the gem in various server environments.  For more  examples and information see [reactrb.org.](http://reactrb.org)
+Note that these are very simple examples, for the purpose of showing how to configure the gem in various server environments.  For more examples and information see [ruby-hyperloop.io.](http://ruby-hyperloop.io)
 
 ## Testing
 
 1. Run `bundle exec rake test_app` to generate a dummy test app.
-2. `bundle exec rake`
+2. `bundle exec appraisal install` to generate separate gemfiles for different environments.
+2. `bundle exec appraisal opal-0.9-react-15 rake` to run test for opal-0.9 & react-v0.15.
 
 ## Contributions