Added .travis.yml
Only test the built version to ensure that 2to3 gets run
Fixed cPickle -> pickle in test
Use Numpy save format instead of pickle
Removed unused code
Don't test Python 3.3 since h5py is not compatible yet
Simplify generation of coordinate index, and in the process prevent bug with Numpy 1.5
np.unravel_index is buggy pre-Numpy 1.6 so use np.indices instead
Fixed comment in .travis.yml
Fixed naming of temporary directory for testing
Merge pull request #15 from astrofrog/travis

Added .travis.yml
Started refactoring Leaf and Branch into a single Structure class
Reverted change to `values` and `indices` to be recursive for now, and updated remainder of code to follow refactoring into Structure.
Fixed name change back
Fixed bug in ``fill_footprint`` following refactoring.
Finished changing coords to indices and intensity to data_value
Fixed a key that was incorrectly changed in previous commit
Renamed components.py to structure.py
Added tests of Structure API
Added test for _add_pixel()