HACKING: update to reflect 0.26 release

Signed-off-by: Rob Browning <rlb@defaultvalue.org>
Add .travis.yml

Signed-off-by: jmoore <josh@glencoesoftware.com>
Add travis-ci build status PNG

Signed-off-by: jmoore <josh@glencoesoftware.com>
Fix travis-ci dependencies

Signed-off-by: Rob Browning <rlb@defaultvalue.org>