Stub for path planning node.
Merge pull request #19 from dpsolomon/path_planner_stub

Path planner stub
Merge pull request #18 from dpsolomon/hydro-devel

Improvements to services and polygon intersection
Added instructions for running blending demo
changed size of voxel leaf
- added sac plane segmentation in order to reincorporate missed points using the plane coefficients produced from the identified planar regions"
- slight modification to the voxel filter downsampling
- rearranged the processing stages in the find_surfaces() method
shows the angle parameters for triangulation in degrees instead of radians
moved rviz configuration file for blending application to the godel_surface_detection package
changed orientation and height value of a point cloud
perfors kdtree search after SAC plane segmentation to check for minimun distances
can select between fake or pcd data in simulated sensor mode
wait for existence of service before calling it
runs all the nodes needed for the visualization demo
added godel_process_path_generation to the dependency list
loads parameters for the blending plan generation task
- added services servers and clients needed to produce the blending process path"
- added server for handling requests for the godel_msgs/SurfaceBlendingParameter.srv service
added new SurfaceBlendingParameters service definition for facilitating the application parameters
added action field and corresponding constant integers
added method to return pose for boundary
added build library targets to LIBRARIES list