Merge pull request #205 from OpenGeoscience/rename-on-off

Renaming on/off/trigger methods to avoid confusion with jQuery
Fixed json reader for line features
Set the line color default to gold

Instead of black or white. Mostly lines are used for
road networks which are typically shown in gold / orange
color
Added a test to validate d3 geojson rendering
Enable read from url
Allow multiple maps by storing one viewer per map
adding a test for multiple maps
Merge branch 'standalone-mouse-handler' into one-viewer-per-map

Conflicts:
	src/gl/vglRenderer.js
disabling multiple maps test
Added md5 for the sample dataset
Fixed style issues
Fixing revision number of test images
Merge pull request #212 from OpenGeoscience/fix_json_reader_for_lines

Fix json reader for lines
Merge pull request #210 from OpenGeoscience/standalone-mouse-handler

Moving mouse handler out of gl
Merge pull request #211 from OpenGeoscience/one-viewer-per-map

Creating one viewer per map
adding utility module containing wigglemaps RangeTree
Importing Box and vect classes required for range queries
Implemented mousemove events for point feature
Implemented click event handlers
adding selection by mouse click/drag