* create follow line strategy
* following wall should work
* change debugging
* bug in engine
Merge branch 'master' into feature/follow_wall
* better steering values
Merge branch 'master' of https://github.com/dfyx/lego-team7
* merge
* use head class
Merge branch 'master' of https://github.com/dfyx/lego-team7
Merge branch 'master' into feature/follow_wall