gazebo_plugins: Adding ForceTorqueSensor Plugin
Added description and example usage in the comments
Changed measurement direction to "parent to child"
Added Gaussian Noise generator
Merge pull request #1 from gborque/hydro-devel

Added Gaussian Noise generator
Updated to Apache 2.0 license
Merge pull request #204 from fsuarez6/hydro-devel

gazebo_plugins: Adding ForceTorqueSensor Plugin