Fix: Issue with loading apiKey.properties from homepath

[typerandom]

Fixes a issue where an API key wouldn't be loaded correctly from a home path.

How to verify

1. Checkout this branch.
2. Execute $ npm link to make it available as a link.
3. Create an empty test project folder (e.g. stormpath-config-test) and $ cd into it.
4. Execute $ npm init --yes.
5. Execute $ npm link stormpath-config so that we link to our stormpath-config master branch.
6. Create a new file called app.js and put the contents of this gist in it.
7. Create an apiKey.properties with the following content and put it in the ~/.stormpath/ directory.
8. Run $ node app.js.

Expected

Console outputs:

null { bob: 123, client: { apiKey: { id: 'abc', secret: 'def' } } }

Fixes #28.

[robertjd]

Verified that the problem has been fixed, merge!

[timothyej]

👍 @typerandom are you working on this (it has the label in progress)?

[typerandom]

Strange, it's place in review in waffle.