merge with branch,fix star generate

must fix coins & squirrel generate position,will implement update with
checkcollisions
//will add 1 texture for all images with Texture Packer
//on load TextureAtlas myTextures = new TextureAtlas("packed.*");
//TextureRegion=myTextures.findRegion("PNGname");
must add new texture for springs & will add dynamic gravity
springs-platforms
must add boss class.