Merge pull request #3 from ccny-ros-pkg/master

Merge branch 'master' into fuerte
Updated to latest version of libphidget (2.1.8.20130618)
Fixed path to udev rule
Catkinised packages
phidgets_c_api: fixed path to Phidgets udev rules file
Updated README information to reflect catkinisation
phidgets_drivers: converted stack into metapackage
phidgets_c_api: updated license and author information
Deleted comments within files of all packages
phidgets_ir: added dependency to phidgets_api package
phidgets_imu: removed unnecessary dependency
phidgets_imu: added install rule to launch files
Updated version, maintainer and author information
phidgets_c_api: added dependency of imported lib to external project
phidgets_c_api: added header to package (from downloaded lib)
phidgets_drivers v0.2.0: catkin metapackage for ROS Groovy
phidgets_c_api: updated to latest libphidget 2.1.8.20130723
phidgets_c_api: deleted package (will be downloaded as external project in phidgets_api)
phidgets_drivers: removed phidgets_c_api dependency
phidgets_api: removed phidgets_c_api dependency