Ap0c/MegaPhysics — pull request #7 by drewsberry (2014-08-21 17:54:06+00:00)
Title: Only run run() if __name__ is __main__. Also, indent overhang

So if we want to import `build.py` at some point in the future, it's standard procedure to put a little:

```python
if __name__ == "__main__":
run()
```

in there so it isn't run whenever you import it. That's what this does.