Update CHANGELOG.md for 0.1.1

Author: kevinoid

CHANGELOG.md

@@ -1,6 +1,12 @@
 # Change Log
 
-## [0.1.0](https://github.com/kevinoid/swagger-spec-validator/tree/0.1.0) (2017-01-13)
+## [v0.1.1](https://github.com/kevinoid/swagger-spec-validator/tree/v0.1.1) (2017-01-13)
+
+- Removed unnecessary dependencies.
+- Improved error message formatting.
+- Improved tests.
+
+## [v0.1.0](https://github.com/kevinoid/swagger-spec-validator/tree/v0.1.0) (2017-01-13)
 
 
 \* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*