run travis with ROS_DISTRO=hydro and ROS_DISTRO=groovy
update some environment to use rosbuild for groovy
remove {}
add python-rosinstall to install rosws
source setup.bash when we use rosbuild
add package to be compiled
source before run rosws
#5: source src/setup.bash in before_script phase
#5: use $BUILDER rather than $ROS_DISTRO to decide command to be used
#5: echo $ROS_PACKAGE_PATH before compile it
#5: source setup.bash when we use rosws before running rosws update
#5: set dummy url to enable setup.bash in rosws
#5: add ls to debug
#5: add -y option to rosws set
#5: merge /opt/ros/goorvy/.rosinstall when we use rosws
#5: add doublequotes when compareing $BUILDER with other strings
#5: fix syntax
#5: add uvc_camera, which is required by roseus_totorislas
#5: manually install smach_viewer

smach_viewer is not listed on rosdep yet
#5: add ar_pose