Changed colormap to RdBu.
Merge branch 'master' into volume-example
Updates to README.
Simplified math in volume creation, removing redundant constant and explicitly using tanh.
Merge branch 'master' into volume-example
Saving HDF5 files only done the distarray way.
Merge pull request #476 from enthought/volume-example

Example: Process simulated seismic volume.
Merge branch 'master' into volume-notebook