ogre: use downloads.sourceforge.net url per brew audit
simbody: use tar.gz instead of zip
Use external URDF hosted in ros/dep
sdformat: fix formula
ogre: optionally build with CG support (fixes #20)
ignition-msgs: new head-only formula (replaces robot_msgs)
ignition-transport: depend on ignition-msgs instead of robot_msgs
ignition-msgs: use default branch
ignition-transport: use czmq HEAD until 3.0 is released
ignition-math: update bitbucket repo name
ogre: fix brew audit
Mostly fix brew audit
travis.yml: initial commit
robot_msgs: remove
travis.yml: build gazebo2
travis.yml: use gazebo2.rb instead of gazebo2
travis.yml: fix tap path in install step
travis.yml: fix mkdir command
Ignition name changes: ign_* => ign-*
sdformat: 2.0.1 prerelease