Only 'n' and 'b' can be periodic.
Merge pull request #65 from enthought/bugfix/periodic-only-for-n-and-b

Only 'n' and 'b' can be periodic.
Remove reference to communicator.
Add optional keys to dist_type table.
Redo the description for 'cyclic'.

Reword a bit to be clear about what block-cyclic means and when it is equivalent to 'block' or 'cyclic.'
Merge pull request #66 from enthought/remove-reference-to-communicator

Remove reference to communicator
Merge pull request #68 from enthought/feature/describe-block-cyclic-equivalences

Redo the description for 'cyclic'.
Add a constraint between stop-start and buffer.shape.
"down sampling" -> "downsampling"
First cut at specifying empty-buffer cases.
Redo "General Contraints" subsection.
Fix a small formatting workaround elsewhere in the doc.
Change BUILDDIR from _build -> build.
Add a simple .travis.yml file.
Add badge to README.
Add sphinx and sphinx-napoleon pip-installs
Add function that computes size, considering padding.
Fix .travis.yml.
Add an empty directory to suppress sphinx warning.
Make sphinx warnings into errors.