docs: update README.md with badges, formatting

Author: ThorstenSuckow

README.md

@@ -1,10 +1,12 @@
-# @conjoon/extjs-app-webmail 
+# @conjoon/extjs-app-webmail ![MIT](https://img.shields.io/npm/l/@conjoon/extjs-app-webmail) [![npm version](https://badge.fury.io/js/@conjoon%2Fextjs-app-webmail.svg)](https://badge.fury.io/js/@conjoon%2Fextjs-app-webmail)
+
+
 This Sencha ExtJS NPM package is built with the [coon.js-library](https://github.com/coon.js) and provides a webmail client
 implementation for the [conjoon](https://github.com/conjoon/conjoon) application.
 
 ## Installation
-```
-npm install --save-dev @conjoon/extjs-app-webmail
+```bash
+$ npm install --save-dev @conjoon/extjs-app-webmail
 ```
 If you want to develop with this package, run the `build:dev`-script afterwards:
 ```bash
@@ -16,12 +18,29 @@ Testing environment will then be available via
 npm test
 ```
 
+For using the package as an external dependency in an application, use
+```bash
+$ npm install --save-prod @conjoon/extjs-app-webmail
+```
+In your `app.json`, add this package as a requirement, and make sure your ExtJS `workspace.json`
+is properly configured to look up local repositories in the `node_modules`-directory.
+
+Example (`workspace.json`) :
+```json 
+{
+  "packages": {
+    "dir": "${workspace.dir}/node_modules/@l8js,${workspace.dir}/node_modules/@conjoon,${workspace.dir}/node_modules/@coon-js,${workspace.dir}/packages/local,${workspace.dir}/packages,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name},${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-treegrid,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-base,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-ios,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-material,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-aria,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-neutral,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-classic,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-gray,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-crisp,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-crisp-touch,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-neptune,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-neptune-touch,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-triton,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-graphite,${workspace.dir}/node_modules/@sencha/ext-${toolkit.name}-theme-material,${workspace.dir}/node_modules/@sencha/ext-calendar,${workspace.dir}/node_modules/@sencha/ext-charts,${workspace.dir}/node_modules/@sencha/ext-d3,${workspace.dir}/node_modules/@sencha/ext-exporter,${workspace.dir}/node_modules/@sencha/ext-pivot,${workspace.dir}/node_modules/@sencha/ext-pivot-d3,${workspace.dir}/node_modules/@sencha/ext-ux,${workspace.dir}/node_modules/@sencha/ext-font-ios",
+    "extract": "${workspace.dir}/packages/remote"
+  }
+}
+```
+
 ## Usage
 When using this package without a backend implementation, make sure your app uses the [extjs-dev-webmailsim](https://github.com/conjoon/extjs-dev-webmailsim) package  of the [conjoon](https://github.com/conjoon) project.
 
 ### Required Services
 This package requires a service that complies with the REST API described in `rest-imap` which can be found
-in the [REST API description](https://github.com/conjoon/rest-api-descriptions) of the conjoon project.
+in the [REST API description](https://github.com/conjoon/rest-api-description) of the **conjoon**-project.
 
 The url of this service can be configured in the configuration file for this package.
 
@@ -35,19 +54,4 @@ The url of this service can be configured in the configuration file for this pac
 } 
 ```
 Please refer to the documentation of [extjs-lib-core](https://github.com/coon-js/extjs-lib-core) on how to
-create package-specific configurations.
-
-### Dev Notes
-
-#### Namespace
-`conjoon.cn_mail.*`
-#### Package name
-`extjs-app-webmail`
-#### Shorthand to be used with providing aliases
-`cn_mail`
-
-**Example:**
-Class `conjoon.cn_mail.view.mail.MailDesktopViewModel` has the alias `viewmodel.cn_mail-maildesktopviewmodel`
-
-## Tests
-Tests are written with [Siesta](https://bryntum.com/siesta)
+create package-specific configurations.