Update README

- Updated issue tracker link.
- Deleted outdated information.
- Added a link to the Chrome Web Store.
- Updated information on the developers docs.

Change-Id: Ic5a59e705d5a5ca73b8720f8b65ac7f66214fb34
diff --git a/README.md b/README.md
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@@ -1,4 +1,7 @@
 # translateselectedtext
+[![Available in the Chrome Web Store](docs/resources/ChromeWebStore_Badge_v2_206x58.png)](https://chrome.google.com/webstore/detail/translate-selected-text/fbimffnjoeobhjhochngikepgfejjmgj)
+[![Get it for Microsoft Edge](docs/resources/EdgeAddonBadge.png)](https://microsoftedge.microsoft.com/addons/detail/translate-selected-text/hdjapebmiepclngcmnjaaiincnllakpg)
+
 The source code of the Chrome "Translate Selected Text" extension.
 
 ## Do you want to help to translate this extension's UI?
@@ -11,8 +14,8 @@
 [![Crowdin](https://d322cqt584bo4o.cloudfront.net/translateselectedtext/localized.svg)](https://crowdin.com/project/translateselectedtext)
 
 ## Bugs
-Please, report any bugs or feature sugestions at GitHub:
-[https://github.com/avm99963/translateselectedtext/issues](https://github.com/avm99963/translateselectedtext/issues)
+Please, report any bugs or feature sugestions in our issue tracker:
+[https://bugs.avm99963.com/p/translateselectedtext](https://bugs.avm99963.com/p/translateselectedtext).
 
 ## Beta version
 As this extension has so many users, I've decided to upload a Beta version of
@@ -32,9 +35,15 @@
 * All the users who use the extension every day and who trust the model of
 developing simple extensions which do not request any privacy-breaking
 permissions.
-* All the users who [have contributed translations](https://crowdin.com/project/translateselectedtext/activity_stream). You rock!
-* BrowserStack for allowing me to use their awesome services in order to test
-the extension in multiple versions of Chrome and in different operating systems.
+* All the users who
+[have contributed translations](https://crowdin.com/project/translateselectedtext/activity_stream).
+You rock!
 
-## More documents
-* [For developers working on the extension](docs/development.md)
+## Contributing
+If you want to contribute to the development of the extension, you're more than
+welcome! The documentation for this project is currently very poor, but please
+open an issue in the [issue tracker](https://iavm.xyz/b/translateselectedtext)
+if you're willing to contribute and I'll make sure to prioritize writing the
+documentation for this extension!
+
+* [Documentation for developers](docs/development.md)
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