Bump Gradle version to v4.1
Bump Gradle version to v4.1

h6ah4i/android-advancedrecyclerview,MaTriXy/android-advancedrecyclerview,MaTriXy/android-advancedrecyclerview,h6ah4i/android-advancedrecyclerview,MaTriXy/android-advancedrecyclerview,MaTriXy/android-advancedrecyclerview,h6ah4i/android-advancedrecyclerview