Adding .gitignore and updating README.
Added .gitignore and updated README. Also set default value for the input argument to none instead of an empty string. Check the lib file, not sure what git does(or does not) with it tho.
Added .gitignore and updated README. Also set default value for the input argument to none instead of an empty string. Check the lib file, not sure what git does(or does not) with it tho.