Add check to not include a dependency more than once.
Merge pull request #66 from SuperJugy/fix

Add check to not include a dependency more than once. Closes #59.
Released V1.6.3 to Maven Central
Prepare for next Iteration
Fix CONTRIBUTING.md
Merge pull request #68 from maurizi/patch-1

Fix CONTRIBUTING.md
Set the executable bit for scripts in the repository

This was actually done on Windows using

$ git update-index --chmod=+x <file>

and allows us to simplify the build instructions a bit.
Merge pull request #71 from sschuberth/master

Set the executable bit for scripts in the repository
Update to Gradle 2.1, Android plugin 0.14.0 and coveralls plugin 2.0.0
Merge pull request #52 from SuperJugy/test

Update to Gradle 2.1, Android plugin 0.13.0 and coveralls plugin 2.0.0. Closes #70
Released V2.0.0 to Maven Central
Prepare for next Iteration
Attempt to Fix Unsupported major.minor version 52.0
Update CONTRIBUTING.md

Add more guidelines to the Contributing doc.
Merge pull request #73 from SuperJugy/test

Attempt to Fix Unsupported major.minor version 52.0. Fixes #72.
Released V2.0.1 to Maven Central
Prepare for next Iteration
Merge remote-tracking branch 'upstream/master'

Conflicts:
	example/exampleApp/build.gradle
	example/exampleLibrary/build.gradle
	gradle/wrapper/gradle-wrapper.properties