Bug 532956: Added an example to show complete git workflow.

This example shows how to use the methods in the Git module in order to
automatically clone a
remote repository, importing it into the workspace, adding a sample text
file and then finally add, commit and push back to the remote
repository.

Task-Url:https://bugs.eclipse.org/bugs/show_bug.cgi?id=532956



Change-Id: I2b1de182804bc807153a2b219f607078306f1fed
Signed-off-by: atharmasanthiran <aathmant.16@cse.mrt.ac.lk>