abstracts loading of svg-points via class MyShape2

Before points were manually extracted from SVG file, now there's
convenience class MyShape2 which hides the complexity behind loading
svg, extracting right node and also this class implements some "magic"
to avoid using PShape.getVertex() on android implementation (namely just
saves points to plain XML file and uses this file to load file instead
of SVG)
Removed sketch.properties from repo, but not from localfiles