adding the solar power plant demo scenario

updated bibitem in readme

Merge branch 'master' of https://github.com/ethz-asl/StructuralInspectionPlanner

removed unnecessary sums

Update README.md

fixedwing cost computation fix

fixed viewpoint visualization scale

Update Readme.md

Python script to extract a timed-trajectory from a StructuralInspectionPlanner path

Update KML2PX4.py

Update SIP2PX4.py

update of readme

update readme.md

update readme with howto sip2rotors

added export functionality for RotorS