Adding new assets

Copy all of the images provided for this chapter into the assets/images folder. Here's a quick rundown of what each one is used for:

Image	Description
button.png	A generic button image that can be used to skin HaxeFlixel buttons
healthHeartOn.png and healthHeartOff.png	Health indicator images that we'll add to the HUD and then make use of in the next chapter
hudBackground.png	The background image for our in-game HUD
levelEndHeader.png	The new header for the level end screen
levelEndWindow.png	The background image for the level end screen
newBestScore.png	An image that will appear on the level end screen when the player reaches a new high score
titleScreenBackground.png	The background image for our splash screen, which has our game's main character on it
titleScreenLogo.png	The game's logo

Next, create a new folder in the assets folder named fonts. After this, copy BebasNeue.otf into the new folder that was created....