Implemented the git add commandline command.

Implementation delegates all work to the AddCommand class and,
therefore, supports only those options currently supported by the
AddCommand which means: --update and the filepattern... arguments.

Change-Id: I4827d37e08b4c988c2458d9ba60a61b6ad414d10
Signed-off-by: Sasa Zivkov <sasa.zivkov@sap.com>
3 files changed