Revert "Warning:Gradle version 2.10 is required. Current version is 2.8."
Revert "Warning:Gradle version 2.10 is required. Current version is 2.8."

This reverts commit b806b3af84476381b8f19d2c7e053a7ed8116eb6.

harti768/s1-chatapp-android,Kabelskevalley/s1-chatapp-android