Added a Clear Trip button next to Recalculate Trip.
Suppressing markers automatically when showing directions, and manually showing waypoint markers, including start. TODO: show custom images for green A, B…
Working on manually setting waypoint markers.
Fixed missing brackets.
Linted classes using jshint and cleaned up unused parameters.
Fixed a typo by removing a paren.
Adding hardcoded google image icons to test.
Adding the removal of the waypoint (directions) placemarks at beginning of  each computeDirections call.
Fixed mistake with variable name.
Ensure that the green waypointmarkers appear above the red place marks.
Only show Add to Trip button if the placemark has not been added.
Ensured that start gets A and rest of waypoints markers get B, C…icons. Removed some console.log calls.