README update on Proguard warning with appindexing
README update on Proguard warning with appindexing

BranchMetrics/Android-Deferred-Deep-Linking-SDK,BranchMetrics/android-branch-deep-linking,BranchMetrics/android-branch-deep-linking,BranchMetrics/Android-Deferred-Deep-Linking-SDK,BranchMetrics/Android-Deferred-Deep-Linking-SDK,BranchMetrics/android-branch-deep-linking,BranchMetrics/Android-Deferred-Deep-Linking-SDK,BranchMetrics/android-branch-deep-linking