Feature/remove dist from src (#243)

* Bye bye, dist directory 👋

* Ignore the dist directory moving forward

* Ignore almost everything for npm packages

* Explicitly define files in project.json

* Alphabatize existing npm scripts

* Also force a build before attempting to publish

* Bumping a patch version as this is a chore PR

* Let's be slightly more specific with the directory ignores

* prepublish was deprecated in npm 4.0; Using the new hook

* We have a yarn.lock, but... All of the npm scripts start with `npm`, not `yarn`. Comitting both updated for now.

* Note regarding `@next` tag

* Replace `dist` script source with unpkg CDN source (points to @latest) on npm

* Update readme to include unpkg CDN links

* Update our last reference to committed bootstrap.min.css file...

* Remove copy of bootstrap.min.css from examples

* Update bootstrap CDN URL to work locally when served from filesystem

* Use local `cornerstone.js` if it's available, if not, grab @latest from the CDN

Author: dannyrb

Diff for: .gitignore

@@ -1,7 +1,8 @@
 node_modules
 npm-debug.log
 .idea
-coverage
-documentation
+coverage/
+documentation/
 docs/_book
 docs/api.md
+dist/

Diff for: .npmignore

@@ -1,6 +1,20 @@
-test
-src
-example
-docs
-documentation
-coverage
+## All Non-Dist Directories
+build/
+config/
+docs/
+example/
+src/
+test/
+
+## Root Files
+
+.babelrc
+.eslintignore
+.eslintrc.js
+.gitignore
+.jsdocrc
+.npmignore
+.travis.yml
+changelog.md
+documentation.yml
+karma.conf.js

Diff for: README.md

@@ -32,13 +32,21 @@ Install
 
 Get a packaged source file:
 
-* [cornerstone.js](https://raw.githubusercontent.com/cornerstonejs/cornerstone/master/dist/cornerstone.js)
-* [cornerstone.min.js](https://raw.githubusercontent.com/cornerstonejs/cornerstone/master/dist/cornerstone.min.js)
+* [cornerstone.js](https://unpkg.com/cornerstone-core)
+  * `https://unpkg.com/cornerstone-core`
+* [cornerstone.min.js](https://unpkg.com/cornerstone-core/dist/cornerstone.js)
+  * `https://unpkg.com/cornerstone-core/dist/cornerstone.js`
 
 Or install via [NPM](https://www.npmjs.com/):
 
+**Latest stable release:**
+
 > npm install cornerstone-core
 
+**Pre-release, unstable, mostly for contributors:**
+
+> npm install cornerstone-core@next
+
 
 Key Features
 ------------
@@ -187,4 +195,4 @@ Copyright 2017 Chris Hafey [[email protected]](mailto:[email protected])
 [travis-image]: https://travis-ci.org/cornerstonejs/cornerstone.svg?branch=master
 
 [coverage-url]: https://coveralls.io/github/cornerstonejs/cornerstone?branch=master
-[coverage-image]: https://coveralls.io/repos/github/cornerstonejs/cornerstone/badge.svg?branch=master
+[coverage-image]: https://coveralls.io/repos/github/cornerstonejs/cornerstone/badge.svg?branch=master