Node to extract the last PoseStamped from a nav_msgs/Path to make robot look where its going.

See: https://github.com/strands-project/scitos_apps/issues/73
Recreated directory
Prepared for release
Merge branch 'pe' into pose_extractor
Merge pull request #8 from cdondrup/pose_extractor

Moving pose_extractor from utils to here
Created changelog
Adjusted version to match the version number of the other packages.
Updated changelogs
0.0.3