Implemented the ability to save connection info from the start screen. Also added a troubleshooting section to the README file.

Now, you only have to enter database connection info once. From then
on, the application will connect with the settings you provided at the
start screen. If you decide you need to change your connection
settings, simply delete 'ConnectionInfo.ci' from the application
directory. This will force the application to again prompt you with the
start screen.