Creating activate.sh file and fixing some coding guidelines
Using path.abspath for the Galaxy installation folder
Fixing docstrings documentation
Fixing relative path to test support files
Fixing coding guidelines on test_xml_generator.py
Merge pull request #14 from josenavas/activate_file

Creates an activate.sh file instead of modifying the user's environment
Merge branch 'master' of github.com:qiime/qiime-galaxy into add_option_names
Fixing support files path in tests