Add script to view markers on Google Map

Add methods prepareDataforMap and prepareDataforMapWithoutName to parse gon.schools.  Add method addMarker that uses google maps to add markers to map.  Modify initialize to show map, centering on NYC and parsing through schoolData to addMarkers.  Add commented out code for a Marker Clusterer - not working.
Add styling to fix zoom bar distortion problem
REmove commented out code setting all schools to @school
Modify application.html.erb for styling and links to Google maps and MarkerClusterer

Add links to markerclusterer and modified link to Google Maps api.  Add nav bar from foundation.  Change title from foundation to NYC high schools.