Commit to main branch.

Merge branch 'voice_feature'

# Conflicts:
#	app/src/main/AndroidManifest.xml
#	app/src/main/java/com/blanyal/remindme/NotificationHelper.java
#	app/src/main/java/com/blanyal/remindme/ReminderAddActivity.java
#	app/src/main/res/values/strings.xml