chrome_plugin to trace mouseover in the webpage

Signed-off-by: algoinfo<windnetv@sina.com>
add context menu
---<windnetv@sina.com>---
add context menu
Signed-off-by: algoinfo
---<windnetv@sina.com>---
setDataset

algoinfo
<windnetv@sina.com>
algoinfo
<windnetv@sina.com>
rename var, add data point function, export data set function and beatuify code
Fix heatmap code for localGlobalMax
point fix
Add AMD support
AMD
AMD Fix
pushItem, setData and addData methods to add data
cleanup
debug option
Reimplement leaflet heatmap canvas with fast quadtree index
Show new leaflet heatmap in demos, use latest leaflet
Enable support for absolute radius (in meters instead of pixels), refactored code
Heatmap as a OpenLayers renderer.
Add weight as a APIProperty.

... and minor adjustments of documentation.
This code is not yet complete!