Merge pull request #58 from arcym/master

Exterminated some bugs.
bugs fixed: double animation render; arrow powerup direction change
bug
updated enemy animations
fixed menu render for the turorial state
Mocs Arcade splash screen added
Merge branch 'master' of https://github.com/computc/adventure
Merge branch 'master' of https://github.com/jshiraef/adventure
timed the splash screen animation with an array
Merge pull request #60 from jshiraef/master

fixed bugs: double animation render & charged arrow direction change issue; also updated enemy spritesheets