Pre-Release-checklist.md

+This page serves as a pre-release check-list in order to make sure that there are no mishaps or left-over development-related code.
+
+1. Bump version number:
+  1. ```lib/version```
+  2. ```README.md```
+  3. ```CHANGELOG.md```
+2. Make sure there are no development dependencies in the ```Gemfile```.
+