Free Hand!

Got Free hand working
Merge branch 'master' of https://github.com/SE3353-HCI/SimpleSketch-3353

Conflicts:
	SimpleSketch-3353/Form1.cs
Polygon isWithin() Quick Fix

Returned false and need to change it when polygon is working
Merge branch 'master' of https://github.com/SE3353-HCI/SimpleSketch-3353