Homebrew complains about `up-config`

I have node/npm installed via [homebrew](http://brew.sh) on a Mac as well as `up(1)`.

When I run `brew doctor` to ensure that things are silky smooth, it complains:

```
Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and what additional flags to use when
compiling and linking.

Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew provided
script of the same name. We found the following "config" scripts:

/usr/local/share/npm/bin/up-config
```

Be nice to use a different filename if possible.

Start by locating the `up-config` entry point in the cloudup-cli package and how it is installed under `/usr/local/share/npm/bin/`. Determine whether the executable can use a different filename, then verify that `brew doctor` no longer reports the installed script.

Written by the indexing model from the issue text.