add new attribute to config to specify the feature property to use as the text for popup. add popup on mouseover
add increased vertical offset for popups to avoid hover event thrashing.
remove useless close button
popups close on mouseout
moved preview_attribute from properties to map config
rebinding popup on feature selection to avoid popup overlay weirdness'
Merge pull request #89 from isaacchansky/gh-pages

add popup on mouseover, add new attribute to config to...