Fixed a bug in make-animation; bad path name.
Merge branch 'master' of github.com:ryanleong/ZombieApocalypse
Added code in simulation.c so that infected people turn into zombies.

There is currently an issue with segfaults, which I'm pretty sure is due to
the fact that newEntity doesn't initialise pointers, such as the asHuman
or asInfected fields.