docs(changelog): update according to standard structure

Author: myii

CHANGELOG.md

@@ -1,4 +1,4 @@
-# Change Log
+# Changelog
 
 ## [v0.4.0](https://github.com/saltstack-formulas/django-formula/tree/v0.4.0) (2015-06-22)
 **Merged pull requests:**
@@ -7,7 +7,3 @@
 - Change states to use short-dec style [\#4](https://github.com/saltstack-formulas/django-formula/pull/4) ([whiteinge](https://github.com/whiteinge))
 - Update README.rst [\#3](https://github.com/saltstack-formulas/django-formula/pull/3) ([ghost](https://github.com/ghost))
 - Some fixes to make this formula work on Ubuntu 14.04 LTS [\#2](https://github.com/saltstack-formulas/django-formula/pull/2) ([terminalmage](https://github.com/terminalmage))
-
-
-
-\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*