Add video recording and app performance monitoring parameters

[bradley-curran]

Add gradle wrapper

The plugin was built with an earlier version of gradle that wasn't explicitly defined in code or the README. Newer versions of gradle were failing the build. I explicitly set the gradle wrapper version so it can be built using the gradle wrapper.

Update README.md

I clarified the example configuration and added a minimal configuration so users can get testing quicker. I also changed some wording to make it more consistent and easier to understand.

Add performance parameters

I've added three performance parameters:

• videoRecording: If set to "off", video recording of the tests will be disabled. Default is "on".
• performanceMonitoring: if set to "off", app performance monitoring will be disabled. Default is "on".
• executionTimeoutMinutes: sets a maximum timeout that tests can run per device. Default is 150.

[bradley-curran]

Closing this pull request and merging manually into master

[nikhil-dabhade]

Did we push this in already as per the comment ? I tried downloading the repo and could not find the commit. I can repoen and merge if required. Let me know.

[bradley-curran]

I've just pushed the latest changes to master. If you do a fetch you should get the latest changes.

I'm preparing to publish to maven central now.