docs: update feature list

Author: KnisterPeter

README.md

@@ -10,16 +10,13 @@ This vscode extension integrates with GitHub.
 
 Current it is possible to do the following:
 
-* Store your GitHub Personal Access Token
 * Checkout one of the open pull requests
 * Browse one of the open pull requests in your default browser
-* Show if the current branch has an associated pull-request on github in the status bar
-* Support github https origin urls
-* Refresh pull request status every 5 seconds
-* Respect github caching headers
-* Show status of current pull request
+* Display pull request and current status (e.g. mergeable, travis build done, ...) in the StatusBar
 * Create a new pull request based on the current branch and the last commit  
   The current branch will be requested to merge into master and the pull request title is the commit message summary.
+* Merge current pull rqeuest with either of 'merge', 'squash' or 'rebase' method.
+* Configure default branch, merge method and refresh interval.
 
 ![Create pull request](images/create-pull-request.png)