Merge pull request #21 from bkkrw/master

Add is_absolute_path function and tests
Added functions to generate SHA256/SHA512/MD5 hashed passwords
Added spec tests for generating SHA256/SHA512/MD5 hashed passwords
Add requirements section
Added function for generating DES hashed passwords
Merge pull request #22 from dieterdemeyer/master

Added functions to generate SHA256/SHA512/MD5/DES hashed passwords
Removed confine for config file check
Merge pull request #23 from dieterdemeyer/master

Removed confine for config file check
Cosmetic fixes to the unit tests
Add file existence confine to packagelock