created login page.
Merge pull request #82 from mbaptist23/offlineMode

created login page.
Merge pull request #83 from mbaptist23/laboffline

added some code that checks for first launch, un tested. also comments i...
added new images in for both the 5 and 4s. those need a bit of work in the UI eventually.
Added view controller for the api key input, and save it into the iOS keychain using an external library.
updated the send data, and updated the directory path creation so it works on 5s