Assumption of existance of python2

```
krka@kristofer:~/dev/codejam/2012-04-14$ ./gcj_init_contest.py 1460488
/usr/bin/env: python2: No such file or directory

Workaround: sudo ln -s /usr/bin/python /usr/bin/python2

Maybe mention this in the README?
```

Original issue reported on code.google.com by `kristofer.karlsson@gmail.com` on 14 Apr 2012 at 10:38
