Prepare changelog for v0.8.3-electron

Author: ara4n

CHANGELOG.md

@@ -1,3 +1,10 @@
+Changes in [0.8.3-electron](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.8.3-electron) (2016-12-24)
+=====================================================================================================================
+[Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.8.3...v0.8.3-electron)
+
+ * Fix signup by working around the fact that reCapture doesn't work on electron
+ * Fix windows shortcut link
+
 Changes in [0.8.3](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.8.3) (2016-12-22)
 ===================================================================================================
 [Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.8.2...v0.8.3)