Add a changelog

Author: ekmartin

CHANGELOG.md

@@ -0,0 +1,12 @@
+# Changelog
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [0.1.1] - 2017-04-10
+### Fixed
+* Update OPDS catalog file to the most recent format.
+This has the side effect of also providing more album covers.
+Added by [@eshellman](https://github.com/eshellman) in
+[#16](https://github.com/InfiniteLibrary/infinite-electron/pull/16).
+
+## [0.1.0] - 2017-02-12
+Initial release.