Initial Commit
Build site list window.
Refine user interface.
Add user button class.
Implement web service communication.
Create managed object subclasses.
 Implement web service communication.
Address compiler warning.
Handle response to login request.
Sort table view content.
Refine managed objects, error handling.
Implement user name validation.
Organize files.
Merge branch 'master' of https://github.com/glekli/InstaLogin