Added command-line setup, misc. minor improvements

-Added command-line setup
--Doesn't show any GUIs
--Automatically updates program if -noupdate is NOT specified (on startup only)
--Creates TWO Program Loop threads -- one to listen for commands, one to run updating
--Program has minimal text output once it starts
--NullPointerExceptions have NOT been tested for
-Changed startNewProgramInstance() location to PAXChecker.java (out from Browser.java update method)
--Added option to put arguments into method for program
-Changed AT&T option to AT&T (MMS)
-Changed AT&T (Text) option to AT&T (SMS)
-Added info in Setup Instructions tab about standard messaging rates
-Made Browser.java set Website Link with setExpo(String) method
-Changed version to 1.6.6