add travis and coveralls badges to ReadME.rst
Merge pull request #8 from enthought/enh/badges-for-readme-rst

add travis and coveralls badges to ReadME.rst
Add a histogram ot the CTF editor.
Compute a histogram in the volume renderer and add it to the CTF editor.
Handle the padding in the CTF editor
Merge pull request #13 from enthought/feature/ctf-histogram

Add a histogram display to the CTF editor
Upgrade Enaml/Atom and switch from casuarius to kiwisolver.
Add __init__.py modules to the tests to work around an enaml problem
Merge pull request #14 from enthought/fix/dev-requirements

Upgrade Enaml/Atom and switch from casuarius to kiwisolver.
Merge branch 'master' into fix/ctf-test-failures