Fix link to readthedocs in the README
Add build notes for hdf5 and h5py.
Link to the HDF5 build notes in index.rst.
Merge pull request #131 from dmcdougall/fix-readme-link

Fix link to readthedocs in the README
Merge pull request #124 from cowlicks/to-from-array

Fix `tondarray` and `fromndarray`
Remove __pycache__ directories with -r.
Merge pull request #136 from enthought/feature/add-hdf5-notes

Add HDF5 / h5py build notes
Maintence in test_client.py
Add decorators.py, contains @local, @vectorize and their base class.
Add test_decorators.py, test local, vectorize, and utilities.
Remove the odin module since the local decorator is in Context.
Update examples/demo.py to not use odin.
Make numpy available on the engines.