fix API URL 404

The old URL was returning a 404. This URL seems like a good replacement to me.
Give the usage code more pythonic formatting

Mark the code as Python for the Github markdown formatter.
Merge pull request #6 from orcasgit/usage_formatting

Give the usage code more pythonic formatting
Merge pull request #5 from orcasgit/API_404

fix API URL 404
add a test suite