update gradle wrapper version. minimum supported is 2.14.1.
update gradle wrapper version. minimum supported is 2.14.1.

ChernyshovYuriy/openxc-android,msowka/openxc-android,openxc/openxc-android,msowka/openxc-android,ChernyshovYuriy/openxc-android,openxc/openxc-android