Merge pull request #14 from akshayparopkari/master

Modified parse_map_file() function to return the header in addition to the rest of the map. Resolves issue #10
Merge pull request #15 from akshayparopkari/master

Updates to util.py and otu_calc.py
Merge pull request #16 from akshayparopkari/master

General additions to bin/ scripts: Adds IO error handling and updated scripts to comply with PEP8