Merge branch 'release/5.0.0.alpha1'

* release/5.0.0.alpha1:
  Changed version to 5.0.0.alpha1 Closes #3
  Added new line at the end of the file
  * Updated README * Updated LICENSE * Added CONTRIBUTING guidelines * Added .editorconfig
  drop support mongoid 3
  support mongoid 4
Merge branch 'release/5.0.0.alpha2'

* release/5.0.0.alpha2:
  * Ruby 2.1 support
Merge branch 'release/5.0.0.alpha3'

* release/5.0.0.alpha3:
  * Fixed license SPDX ID in gemspec
Merge branch 'release/5.0.0.alpha4'

* release/5.0.0.alpha4:
  * Reformatted changelog
Merge branch 'release/5.0.0.alpha5'

* release/5.0.0.alpha5:
  * Support for mongoid 4.0.0.alpha2 * Fixed readme
Merge branch 'release/5.0.0.beta1'

* release/5.0.0.beta1:
  * Mongoid 4.0.0.beta1 support
fixed conflicts
fixed conflicts
Merge branch 'release/5.0.0-rc2'

* release/5.0.0-rc2:
  * Mongoid 4.0.0.rc2 support
Merge branch 'release/5.0.0'

* release/5.0.0:
  * Mongoid 4.0.0 support
fixed
Updated version number
Merge branch 'hotfix/5.0.1' into develop

* hotfix/5.0.1:
  Updated version number
  fixed