Updated .gitignore
Merge branch 'pep8' of https://github.com/skytreader/PyGame-Objects into pep8
Converted tabs to spaces in helpers/grid.py .
Converted tabs to spaces in color blocks test.
Converted tabs to spaces in components tests.
Converted tabs to spaces in helpers unit tests.
Converted tabs to spaces in monster shooter test.
Converted tabs to spaces in trees test.