Update the README
Update the README

Spindle-Inc/geokit-rails,jensb/geokit-rails,BlinkerGit/geokit-rails,zeke/geokit-rails,geokit/geokit-rails,kidzui/geokit-rails3,bellycard/geokit-acts-as-mappable,geokit/geokit-rails3,globalworks/geokit-rails3