BUG: paths are misconfigured for globally-installed amo-cli packages

[cedricium]

When attempting to use amo-cli w/ v0.2.0 and above, the following warnings are thrown:

WARNING: No configurations found in configuration directory:/Users/cedricamaya/config

It's warning that the config file cannot be found in the pwd, which is not where it should be looking for it. Rather, it needs an absolute path to the installed amo-cli package root.

[cedricium]

Specifically an issue with the node-config dependency - setting the config directory as a node env variable seems to fix the issue.

Refs: https://github.com/lorenwest/node-config/wiki/Configuration-Files#config-directory