add changelog.md

Author: xuyecan

CHANGELOG.md

@@ -0,0 +1,20 @@
+# Change Log
+
+## [0.2.0](https://github.com/alibaba/HandyJSON/tree/0.2.0) (2016-09-27)
+[Full Changelog](https://github.com/alibaba/HandyJSON/compare/0.1.0...0.2.0)
+
+**Closed issues:**
+
+- struct can't have designated initializer. [\#3](https://github.com/alibaba/HandyJSON/issues/3)
+
+**Merged pull requests:**
+
+- Dev xyc [\#5](https://github.com/alibaba/HandyJSON/pull/5) ([xuyecan](https://github.com/xuyecan))
+- Add codecov badge to master. [\#4](https://github.com/alibaba/HandyJSON/pull/4) ([cijianzy](https://github.com/cijianzy))
+- Add badge [\#2](https://github.com/alibaba/HandyJSON/pull/2) ([cijianzy](https://github.com/cijianzy))
+- Add support for serializtion [\#1](https://github.com/alibaba/HandyJSON/pull/1) ([cijianzy](https://github.com/cijianzy))
+
+## [0.1.0](https://github.com/alibaba/HandyJSON/tree/0.1.0) (2016-09-21)
+
+
+\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*