Release 1.1.6 of KINOVA ROS KORTEX repository

Release 1.1.6 of KINOVA KORTEX repository in sync with KINOVA Gen3 Ultra lightweight robot version 1.1.6. The changes include:

• Generated the .srv, .msg, .cpp and .h files for Kortex API v1.1.6.
• Added the build.sh script to setup ROS Kortex easily after cloning the repository. The script downloads the API, unzips it to the right folder and builds the ROS packages with catkin_make.
• Updated the comments in the examples
• Updated the Google Drive link to download the Kortex API v1.1.6
• Added the kortex_tests package : a first draft for functional testing of the ROS nodes