initial project version
- Main algorithm defined.
- gitReset function done.
- gitReset function renamed to gitMoveHead.
- gitGetChangedFilesFromCommit done.
- subprocess.check_call is substituted by check_output in both functions.
- Get changed lines from commit added.

call to get added lines from commit added.
call to get removed lines from commit added.
- several features implemented

git checkout to move to a specific commit instead of git reset.
Able to get modified files in the current commit.
Able to detect added lines per file in the current commit almost implemented, not finished.
- Bug fixing, exceptions support, checks improved

Use of strip() instead of [:1] to remove spaces.
Support exceptions raised by subprocess.
if git command run ok then functions return 1.
Check that git command exists added.
Check that git command went ok to update the current status.
- Adding a feature to figure out deleted lines

Added a new function, git_get_removed_lines
This funciton is called from the main algorithm function