Forgot to bump version in v0.0.3

Both the [current master](https://github.com/opencontainers/runc/blob/744a6b0e7bd3aa1d2985060170040392be3e94e3/main.go#L11) and the [tagged v0.0.3](https://github.com/opencontainers/runc/blob/v0.0.3/main.go#L11) have `0.2` as their version.  Is that value intended to match the runC tag?
