Added walking animations for the torso and the legs.

Here are some things to note:
- Each animation has its own png, but one big sprite sheet with all the animations is included.
- Each frame is 89 * 100 (likely to change in the future).
- No need to manually specify frames, just let it loop from frame one to the last frame, and it will connect properly.
Merge pull request #6 from SunMaggot/hanbo

Added walking animations for the torso and the legs.