gitan: Add git add -an helper
gitan: Add git add -an helper

Change-Id: I41b6a12ca110f5815b2d0611fbb0d38a431f0c3a
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools