Added invitation stuff. Also added dev environment stuff for setting variables during development.
Invitation emails sent properly. Need to handle email links
Basic invite link handling
change msg to error
Bill put done
Added paid option to put request, this will allow bills to be settled
removed async
Bills are donenode server/app.js
Added comments
No longer return the error object
Merge pull request #109 from heierj/billstuff

Bills all done :)
Merge pull request #104 from Wizecoder/email-invite

Start to email invites (this one merges properly)
Implement GET '/apartment/:apt/users'
Fix POST '/apartment'
Clean up GET '/apartment/:apt'
Clean up PUT '/apartment/:apt'
Merge pull request #112 from amitburst/apartment-routes

Clean up apartment routes, add GET '/apartment/:apt/users', fixes #107