Mention New Feature in release notes

The installer [now offers to launch the Git Bash right
away](#103).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

installer/ReleaseNotes.md

@@ -40,6 +40,7 @@ This package contains software from a number of other projects including Bash, z
 * Git is now [added to the `PATH` by default](https://github.com/git-for-windows/build-extra/pull/102) (previously, the default was for Git to be available only from Git Bash/CMD).
 * Comes with [Git v2.8.0](http://article.gmane.org/gmane.linux.kernel/2185094).
 * Comes with the [Git Credential Manager v1.2.2](https://github.com/Microsoft/Git-Credential-Manager-for-Windows/releases/tag/v1.2.2).
+* The installer [now offers to launch the Git Bash right away](https://github.com/git-for-windows/build-extra/pull/103).
 
 ### Bug Fixes