This change refactors the `gomu run` command to use Go Micro's internal
runtime package in order to run services. Not only does this clean up
duplicate functionality between Go Micro and Gomu, but also adds the
feature to Gomu to run remote projects. For example, the following
command pulls in a remote project and runs it locally.
```bash
gomu run github.com/auditemarlow/helloworld
```
The `gomu run` command remains backwards compatible. By invoking `gomu
run` in a Go Micro project directory, Gomu will simply run that project.