Updated git ignore to include mac os system files and pycharm generated ...

...files. Removed those files and pyc files.

If you want to do this yourself so that i am not in your commit history:

    #remove .DS_store files
    find . -name ".DS_Store" -exec rm -rf {} \;

    #remove .pyc files
    find . -name "*.pyc" -exec rm -rf {} \;

    #stage deleted files for commit
    git add -u .

    #remove .idea files from version control
    git rm -r .idea

Then update .gitignore file :*