Fix #35; tested and should (hopefully) work without any more bugs
Had to change the way attributes for entities were stored in World; also did a little refractoring
Updated tests to test whether removing a component works
Forgot to remove print statement in World.cpp whilst resolving #35
got trivial case working. 3/17/14
Merge branch 'master' of https://github.com/miguelmartin75/anax
Merge https://github.com/johnmarinelli/anax