Updated .gitignore

[PartTimeLegend]

Github has a really handy .gitignore that removes lots of useless files.
I was seeing them when I forked the repo, the .gitignore of the master
repo should be updated to reflect this.

[saivann]

I don't think we need to go this far. Actually, all changes must be reviewed, that's what git diff --staged is for.

And as for OS automatically generated files, I think the last 8 lines of the suggested github .gitignore file would be far enough :
https://help.github.com/articles/ignoring-files

[PartTimeLegend]

Fair enough. I just find it useful.

Closed.

[saivann]

I will still add a few exceptions in the .gitignore file. There are indeed a few that will be helpful.