Update README.md

changed required JDK version to 1.7
Contour implementation update
l3bindump update.
Merge remote-tracking branch 'origin/master'
Contour implementation update
Fixed Contour Icon status problem. Now the icon is activated only after an image is generated for a band.
Changed contour icon toggle status to false. It should not be a toggle.
Contour implementation update
Contour implementation update
Contour implementation update
Contour implementation update
Contour implementation update
Contour implementation update
minor mods to install4j configuration
merged Contour changes from master