Made sample actions behavior a subclass of the Actor class.

Added new subclass for the Actor - MeshActor. This actor let's the actions to modify the mesh (i.e. Skew).

Added new actions:
ActionSkewBy.cs
ActionRandom.cs

new actions:
ActionBezierRel.cs
ActionBlink.cs
ActionJumpBy.cs
ActionJumpTo.cs

ActionFadeIn.cs
ActionFadeOut.cs
ActionFadeTo.cs

Conflicts:
	README.md

new actions:
ActionFadeBy.cs
ActionTintTo.cs