(README) Add build status images.
Add roslint. Code cleaned to pass roslint
(travis) Permit failure for all Groovy variants.
Merge pull request #242 from 130s/edit_readme

(README) Add build status images.
Merge pull request #245 from start-jsk/groovy-devel

Cherrypick #242 into hydro-devel from groovy-devel
(hironx.py) fix invalid syntax introduced by mistake. (ros_client.cpp, acceptancetest_hironx.cpp) Fix wrong str operation.
Merge pull request #244 from 130s/add_roslint

Add roslint. Code cleaned to pass roslint
(hironx.py) Start ROS_Client in addition to RTM client (HIRONX).
Merge pull request #246 from 130s/add_script_ros_client

(hironx.py) Start ROS_Client in addition to RTM client (HIRONX).
changelog 1.0.24
Merge pull request #247 from 130s/changelog_1.0.24

changelog 1.0.24
1.0.24
(changelog) Correct bullets indentation.
Merge pull request #248 from 130s/changelog_corret_bullet

(changelog) Correct bullets indentation.
(acceptancetest_rtm.py) Remove deprecated, unused method.
Merge pull request #249 from 130s/rm_deprecated_method_acceptance_rtm

(acceptancetest_rtm.py) Remove deprecated, unused method.
applying impedance control
adding argument USE_IMPEDANCECONTROLLER
applying impedance controller functions can switch both right and left arm