Update README.md

Updated the README.md Now it contains instructions on how to use the rosbuild and catkin workspace we will push soon.
Merge branch 'master' of https://github.com/strands-project/autonomous_patrolling
Merge pull request #5 from ToMadoRe/master

Added include directories with emtpy .gitignore files 
Look great!
Merge branch 'master' of https://github.com/strands-project/autonomous_patrolling
Add low-pass filter