Sync all dependences

```
$ bin/cnpm sync
Parse `package.json` file now...
Can not find package cnpm1 in official registry

  Do you want to sync all dependencies and devDependencies of cnpm1?(y/n)y
Start sync ["urllib","open","colors","debug","commander","utility","bagpipe","npm","should","blanket","travis-cov","coveralls","mocha-lcov-reporter","mocha"].
```