Prepare changelog for v0.10.6

Author: dbkr

CHANGELOG.md

@@ -1,3 +1,9 @@
+Changes in [0.10.6](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.10.6) (2017-09-21)
+=====================================================================================================
+[Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.10.5...v0.10.6)
+
+ * New version of js-sdk with fixed build
+
 Changes in [0.10.5](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.10.5) (2017-09-21)
 =====================================================================================================
 [Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.10.4...v0.10.5)