upgrade jquery version to 1.10.2
add identity function example
fix colour scheme description
Revert "svgDraggable plugin, return this"

This reverts commit b0b826bfbad79697878c7a4a1fee8ef3ea99d112.
Revert "make svgDraggable a jquery plugin"

This reverts commit b269de53b3a17f16f4845d56676e96dacf400557.