message: Add Thing constructor that takes an initialAction for Sprite
diff: @@ -22,6 +22,11 @@ public:
  mSprite(spritePath)
  {}
  + Thing(const std::string& name, const std::string& spritePath, const std::string& initialAction) :
  + mName(name),
  + mSprite(spritePath, initialAction)
  + {}
  +
  virtual ~Thing()
  {
  #ifdef _DEBUG
  