Update release noted

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

Author: dscho

installer/ReleaseNotes.md

@@ -1,5 +1,5 @@
-#Git 2.4.4.2 Release Notes
-Last update: 28 June 2015
+#Git 2.4.5.1 Release Notes
+Last update: 29 June 2015
 
 ##Introduction
 
@@ -28,6 +28,16 @@ This software contains Embedded CAcert Root Certificates. For more information p
 
 This package contains software from a number of other projects including zlib, curl, msmtp, tcl/tk, perl, MSys2 and a number of libraries and utilities from the GNU project.
 
+##Changes since Git-2.4.4 (June 20th 2015)
+
+###New Features
+
+* Comes with Git 2.4.5
+
+###Bug fixes
+
+* Git Bash [no longer crashes when called with `TERM=msys`](https://github.com/git-for-windows/git/issues/222). This reinstates compatibility with GitHub for Windows.
+
 ##Changes since Git-2.4.3 (June 12th 2015)
 
 ###New Features