Squashed 'moose-examples/' changes from 7054325..8c7c00c

8c7c00c can pass command line arguments also
70f83d0 cleanup in return type from None to moose.shell
fe4238b indentation for python3
3e81764 indentation fixes for python3
66f1bb0 Removed <<<<, ===  and >>> from improper merge.
0719a5d Merge commit '349abe7e'
864776c added deleted files
87a6963 temp deleted

git-subtree-dir: moose-examples
git-subtree-split: 8c7c00c0e29c3c02c1e20f82f8baba5206ea913d