Made fetching and displaying data structure a little nicer

Now creates a hash style json structure with three special keys:
    'Totals' - the bottom line, which is a formula in the gdoc
    'Scoring Description' - some handy text
    'Axes' - the names of the axes in order they appear in the data arrays
  then the rest of the structure is keyed by title, values an array of axis scores
Adds the initial (static) display

This makes the repo self-hosting.
Add a gemfile and README.

This is starting to look scarily like a real thing.