Clean up docs (#5528)

* Remove SauceLabs credentials

SauceLabs is no longer used during builds, so we no longer need to include these encrypted credentials.

* Clean up badges

* Remove SauceLabs from the README

* Misc README fixes

* Disable Travis email notifications

Looks like we accidentally re-enabled these when removing IRC.

.travis.yml

@@ -3,14 +3,12 @@ language: node_js
 node_js:
   - "0.10"
 
-env:
-  global:
-    - secure: XMNK8GVxkwKa6oLl7nJwgg/wmY1YDk5rrMd+UXz26EDCsMDbiy1P7GhN2fEiBSLaQ7YfEuvaDcmzQxTrT0YTHp1PDzb2o9J4tIDdEkqPcv1y8xMaYDfmsN0rBPdBwZEg9H5zUgi7OdUbrGswSYxsKCE3x8EOqK89104HyOo1LN4=
-    - secure: BU5BPRx6H4O3WJ509YPixjUxg+hDF3z2BVJX6NiGmKWweqvCEYFfiiHLwDEgp/ynRcF9vGVi1V4Ly1jq7f8NIajbDZ5q443XchZFYFg78K/EwD5mK6LYt16zb7+Jn0KbzwHeGRGzc9AvcEYlW6i634cSCm4n3BnqtF5PpogSzdw=
-
 script:
   - grunt
 
+notifications:
+  email: false
+
 deploy:
   - provider: npm
     email:

README.md

@@ -1,8 +1,8 @@
 Select2
 =======
 [![Build Status][travis-ci-image]][travis-ci-status]
-[![cdnjs](https://img.shields.io/cdnjs/v/select2.svg)](https://cdnjs.com/libraries/select2)
+[![cdnjs](https://img.shields.io/cdnjs/v/select2.svg)][cdnjs]
-[![jsdelivr](https://data.jsdelivr.com/v1/package/npm/select2/badge)](https://www.jsdelivr.com/package/npm/select2)
+[![jsdelivr](https://data.jsdelivr.com/v1/package/npm/select2/badge)][jsdelivr]
 
 Select2 is a jQuery-based replacement for select boxes. It supports searching,
 remote data sets, and pagination of results.
@@ -33,10 +33,6 @@ Browser compatibility
 * Safari 3+
 * Opera 10.6+
 
-Select2 is automatically tested on the following browsers.
-
-[![Sauce Labs Test Status][saucelabs-matrix]][saucelabs-status]
-
 Usage
 -----
 You can source Select2 directly from a CDN like [JSDliver][jsdelivr] or
@@ -81,8 +77,7 @@ make a pull request back to Select2 here on GitHub.
 Documentation
 -------------
 The documentation for Select2 is available
-[through GitHub Pages][documentation] and is located within this repository
+[through GitHub Pages][documentation] and is located within the [separate `select2/docs` repository][documentation-repository].
-in the [`docs` folder][documentation-folder].
 
 Community
 ---------
@@ -96,16 +91,15 @@ The license is available within the repository in the [LICENSE][license] file.
 [cdnjs]: http://www.cdnjs.com/libraries/select2
 [community]: https://select2.org/getting-help
 [documentation]: https://select2.org
-[documentation-folder]: https://github.com/select2/select2/tree/master/docs
+[documentation-repository]: https://github.com/select2/docs
 [freenode]: https://freenode.net/
-[jsdelivr]: http://www.jsdelivr.com/#!select2
+[jsdelivr]: https://www.jsdelivr.com/package/npm/select2
 [license]: LICENSE.md
 [releases]: https://github.com/select2/select2/releases
-[saucelabs-matrix]: https://saucelabs.com/browser-matrix/select2.svg
-[saucelabs-status]: https://saucelabs.com/u/select2
 [travis-ci-image]: https://img.shields.io/travis/select2/select2/master.svg
 [travis-ci-status]: https://travis-ci.org/select2/select2
 
+[angularjs]: https://angularjs.org/
 [bootstrap3]: https://getbootstrap.com/
 [bootstrap4]: https://getbootstrap.com/
 [django]: https://www.djangoproject.com/
@@ -115,6 +109,7 @@ The license is available within the repository in the [LICENSE][license] file.
 [drupal]: https://www.drupal.org/
 [drupal-select2]: https://www.drupal.org/project/select2
 [flat-ui]: http://designmodo.github.io/Flat-UI/
+[mdr-angular-select2]: https://github.com/modulr/mdr-angular-select2
 [meteor]: https://www.meteor.com/
 [meteor-select2]: https://github.com/nate-strauser/meteor-select2
 [metro-ui]: http://metroui.org.ua/
@@ -130,5 +125,3 @@ The license is available within the repository in the [LICENSE][license] file.
 [wicketstuff-select2]: https://github.com/wicketstuff/core/tree/master/select2-parent
 [yii2]: http://www.yiiframework.com/
 [yii2-widget-select2]: https://github.com/kartik-v/yii2-widget-select2
-[angularjs]: https://angularjs.org/
-[mdr-angular-select2]: https://github.com/modulr/mdr-angular-select2