- added missing break after 'm'/'M' path command
- path command 'm'/'M' is converted to 'l'/'L' so that multiple
coordinate pairs behave correctly
- fixed rendering of first point on path
- Needed support to SVG image size, hence added following:
- added NSVGImage, which holds image size and list of shapes
- added NSVGShape which holds color/store and list of paths
- added more documentation to NSVGPath
- removed unused 'tol'
- added shapeId to paths, used to identify path belonging to same shape
- small text change to readme