message: Updated CHANGELOG for polyserve release 0.21.1
diff: @@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  ## Unreleased
  +## [0.21.1](https://github.com/PolymerLabs/polyserve/tree/v0.21.1) (2017-09-15)
  +
  * Fix issue where requirejs is installed somewhere other than in polyserve's own node_modules subfolder.
  ## [0.21.0](https://github.com/PolymerLabs/polyserve/tree/v0.21.0) (2017-09-13)
  