0.7.20

• update doc
• add PyPi deployment to Travis CI config
• add Scrutinizer & Style CI configs

Initial dirutility release

• DirPaths: Retrieve a list of paths within a root directory
• DirTree: Retrieve a nested dictionary representing a roots file structure
• FlattenTree: Flattens the contents of a root directory by moving all sub-folders and files to root
• CreateTree: Create organized file structure based on indexing of files within root