message: Prepare changelog for v0.10.6
diff: +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)
  