Add script to remove gitignore files.

[Karanagarwal12]

Added a script to remove all the files which are ignored by git with the help of .gitignore files. This will remove all the ignored files from all .gitignore files.
Fixes #3.

[ecxtacy]

Looks good, I've updated the title and description. Have a look at it and use these conventions for PR messages (differentiate from your PR title and description).

[ecxtacy]

BTW I have a fun followup question. What would happen if the .gitignore contains your scripts name, and you run your script ? Will the script get removed ? Or will it throw error since the program is trying to remove it while it is executing ? Or will it not get removed ? 😆

[Karanagarwal12]

That's a good question,
I think that it will throw an error as it is being executed as you said.
Correct me if I'm wrong