added threshold
added readme
moved readme to root
some test with canvas over google maps
added gae test application
improved copy
made maps_threshold work in nodejs and added a node.js proxy for the image tiles
rename proxy
updated readme
tidy
added optimisation on slider 'up'
Added non-working web-workers filter
updated readme
took out the transparency
made map bigger to test speeds
updated indenting
some refactoring
added nfdi test
ndfi layer processing
composing tiles into one canvas in order to process the whole image