GeoJSON updates
Initial changes.  Incomplete
get markers example working for 0.8dev.
Added handling of defs, gradient, drop shadow, fillPattern etc.
Changes required to get the airports.html example running.

Includes fixing the text functions and the ArcedPolyline.
Changes required to get the armedconflicts.html example running.
Changes required to get the choropleth example running.
Changes required to get the colors example running.
Changes required to get the conflictdata example running.
Changes required to get countystats working.
Changes required to get dccrimes example working
Changes required to get the dcmetrobus example working
Changes required to get the deathsbyconflict example working.
Changes required to get the earthquakes example working
Changes required to get the election examples working.
Attempt to fix the geohashart example, unsure because of cross origin error
Changes to get the geohashes example working
Changes to get the incomelevels example working
Changes to fix manymarkers example, including an update to the markercluster src
ChChanges to fix meetups example