Updated Gradle from 2.8 to 2.14

[codingjeremy]

Issue by AndrewReitz Thursday Jun 16, 2016 at 15:13 GMT Originally opened as https://github.com/googlesamples/android-RenderScriptIntrinsic/pull/1

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An Update to Android Tools requires gradle version 2.10 or greater to work.

Also included a gitignore since there was not one in this project.

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AndrewReitz included the following code: https://github.com/googlesamples/android-RenderScriptIntrinsic/pull/1/commits