add a coverage rc configuration
add a dev-requirements file
update travis configuration
remove cython since it should not be required
add apptools in the trvis-ci configuration
add blockcanvas in the setup
install unittest2 when running under python 2.6
add etsdevtools in the installation
more updates
we need cython after all
use the right environment variable
Merge pull request #16 from enthought/cleanup-travis-ci-build

Cleanup travis ci build