#316: helper.py, add file with 'shebang'
#316: helper.py, file docblock
#316: helper.py, add 'md5_for_file' method
#316: helper.py, method docblock
#316: helper.py, define 'import hashlib'
#316: helper.py, minor comment change
Merge pull request #317 from jeff1evesque/python_helper

#316: Compute hash value of file content