Upload #8 : Contributing.md

[AkshGautam]

Please make sure these boxes are checked before submitting your pull request - thanks!

Fixes #{Issue Number}

• [x] Apply the AndroidStyle.xml style template to your code in Android Studio.

• [x] Run the unit tests with ./gradlew check to make sure you didn't break anything

• [x] If you have multiple commits please combine them into one commit by squashing them.

[AkshGautam]

@therajanmaurya Please review this for issue number #8