Update dependencies

- switch `q-fs` to `q-io ~1.10.6`
- switch `qq` to `q ~0.9.7`
- update `semver` to `~2.2.1`
- update `coa` to `~0.4.0`
- update `npm` to `~1.3.15`
- update `rimraf` to `~2.2.2`
- fix code to use updated deps