docs(readme): remove excess contributing doc

[skip ci]

Author: Awk34

readme.md

@@ -217,17 +217,7 @@ An example server component in `server/api`
 
 See the [contributing docs](https://github.com/DaftMonk/generator-angular-fullstack/blob/master/contributing.md)
 
-This project has 2 main branches: `master` and `canary`. The `master` branch is where the current stable code lives and should be used for production setups. The `canary` branch is the main development branch, this is where PRs should be submitted to (backport fixes may be applied to `master`).
-
-By separating the current stable code from the cutting-edge development we hope to provide a stable and efficient workflow for users and developers alike.
-
-When submitting an issue, please follow the [guidelines](https://github.com/yeoman/yeoman/blob/master/contributing.md#issue-submission). Especially important is to make sure Yeoman is up-to-date, and providing the command or commands that cause the issue.
-
-When submitting a PR, make sure that the commit messages match the [AngularJS conventions](https://docs.google.com/document/d/1QrDFcIiPjSLDn3EL15IJygNPiHORgU1_OOAqWjiDU5Y/).
-
-When submitting a bugfix, try to write a test that exposes the bug and fails before applying your fix. Submit the test alongside the fix.
-
-When submitting a new feature, add tests that cover the feature.
+When submitting an issue, please follow the [Yeoman issue guidelines](https://github.com/yeoman/yeoman/blob/master/contributing.md#issue-submission). Especially important is to make sure Yeoman is up-to-date, and providing the command or commands that cause the issue, as well as any stack traces.
 
 ## License