Added tests for Week 4.
Removed front impact controller from demo and updated the second test to check if the robot has moved at all.
Updated manual for Week 4.
Merged manual from coursera-sp14 branch.
Merge branch 'coursera-week-4' of github.com:jdelacroix/simiam into coursera-week-4
Merge branch 'coursera-sp14' of github.com:jdelacroix/simiam into coursera-week-4
Fixed manual conflicts.
Fixed small debug mistake.
Renamed ir_distances_sf/rf to ir_distances_rf/wf to coincide with the manual, also reverted to regexp over splitstr, because splitstr doesn't exist in older versions of MATLAB.
Put a note in the manual that states that Week 2 uses a different voltage divider.
Fixed test that fails on negative number inputs.
Fixed partially left over solution.
Changed theta_o to theta_ao to match up with documentation and slides.
Changed u_o to u_ao to coincide with slides.
Adding images for Week 4 to source and produced new PDF.
Merge branch 'coursera-week-4' of github.com:jdelacroix/simiam into coursera-sp14
Missed another theta_ao.
Merge branch 'coursera-sp14' of github.com:jdelacroix/simiam into coursera-week-5
Merged and resolved, pluse AOandGTG should work.
Fleshed out switching logic according to manual.