Important GIT tricks

1. To view the diff of the files using vimdiff, 
1. Open ~/.gitconfig and append the following lines
   [diff]
     external = git_diff_wrapper

NOTE: you can also do it, by issuing "git config --global diff.tool vimdiff", but I have not tried.

References: https://technotales.wordpress.com/2009/05/17/git-diff-with-vimdiff/

https://stackoverflow.com/questions/3713765/viewing-all-git-diffs-with-vimdif

2. To ignore the cscope files showing from "git status [-s]", do the following.
- go to the working directory
- and add cscope file(s) in .gitignore file