Added Input examples
Added GroupPShape.
Added BeginEndContour example
Added ParticleSystemPShape example
Added PathPShape example
Added PolygonPShape example
Added PolygonPShapeOOP example
Added "between" syntax
Added PolygonPShapeOOP2 example
Added PolygonPShapeOOP3 example
Added PrimitivePShape example
Added WigglePShape example
Added period.
Minor nits.
Fixed classes.
Ah! Made proper Python class.
Fixed nits.
No ArrayList.
Removed _
Used random to select shapes.