Creating the Android styleguide

Description and Impact
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Start of the Android styleguide.

Rollback Plan
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* To roll back this change, revert the merge with: `git revert -m 1 MERGE_SHA` and perform another deploy.

URLs
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> Links to bug tickets or user stories.
* [Jira issue MOBILE-963](https://sportngin.atlassian.net/browse/MOBILE-963)

QA Plan
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Review the published styleguide available at: http://sportngin.github.io/styleguide/android.html