Bug fix release!

• Fix compatibility with Python 2.7
• Fix an AttributeError on self.loginData
• Don't use HTTP codes to validate the requests, check the response text instead
• Add metadata to the package source
• Fix URL for removing favorite saves in tptapi.Client().remove_fav()
• Rename arguments to make them clearer
• Make arguments for tptapi.Client().browse() and tptapi.Client().list_tags() optional
• Define python_requires in setup.py in order to restrict Python versions