Added support for config vars for appId, restAPIKey, masterKey

[jasonkneen]

Added this so that it was easier to set these as heroku config vars

[mattcreager]

@jasonkneen, it probably makes sense to introduce these in #8 -- any other config worth including?

[jasonkneen]

No I think that's it.
On Fri, 29 Jan 2016 at 20:52, Matthew Creager notifications@github.com
wrote:

@jasonkneen https://github.com/jasonkneen, it probably makes sense to
introduce these in #8
#8 -- any
other config worth including?

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#10 (comment)
.

[gfosco]

Will be addressed in #8, Thanks! 👍