add use -j2 for travis
add ROS_PARALLEL_JOBS=2
remove wstool install laser_assembler and check if the directory exists when compile atlas_laser_snapshotter
add depend from hrpsys_gazebo_general_iob to hrpsys_gazebo_msgs_gencpp, see Issue #5
Merge branch 'master' of https://github.com/k-okada/rtmros_gazebo
Merge pull request #4 from k-okada/master

add use -j2 for travis