added .gitignore, removed an old layout file, stopped trackingunneccessary eclipse files
added activity which turns on bluetooth adapter and lists paired and discovered devices
seem to have bluetooth connection established, now need to manage it and start sending data
added more lifecylce methods to ensure clean exit and refactored code for readability
returns to main activity after connecting, sends message "Hello World!"
Should refactor to use a service instead of global BluetoothSocket variable
switched to using service to control Bluetooth connection
added function so BT connection could be closed, used it when user tried to start a new one; various other code cleanup/improvements