Added Screen Shake and Smoothness

Hi,

Just a small update, but I did add a new level with a new enemy and a new boss. I changed the title to 'Solar Ember Rush' . I improved the smoothness of the game... didn't realize pixel perfect was making it look jittery and hard to look at. I also added screen shake for when the player gets hit, or a boss gets damaged to give some nice feedback to the player. 

Other improvements, I added a life power up, when you defeat a boss you get a extra life. I also added an animation in the HUD when you pick up this upgrade or when you get damaged.