How can I install stellaris data logger software?

You almost answer your own question!  As you state - the Stellaris MCU systematically "reads/logs" the pertinent data - the mechanics reveal w/in the provided source code.  Thus - to exploit a larger screen - would not you send that data to the PC - as one additional step w/in the existing StellarisWare program? 

You'd have to decide/choose most suitable transfer medium and then develop your own PC program from scratch - or use one of many existing data log/display programs - or feed the data into a spreadsheet program for even deeper statistical analysis and display... 

Many ways to bite this apple...

How can I watch the wave forms in pc stellaris LM4F232 development board ? Which software is used to watch the wave forms for stellaris LM4F232 development board? 

I looked at the comments at the top of the qs-logger program...

It said this...

//! A companion Windows application, logger, can be found in the
//! StellarisWare/tools/bin directory.  When the data logger's STORAGE option
//! is set to "HOST PC" and the board is connected to a PC via the USB OTG
//! connection, captured data will be transfered back to the PC using the
//! virtual serial port that the EK board offers.  When the logger application
//! is run, it will search for the first connected EK-LM4F232 board and display
//! any sample data received.  The application also offers the option to log
//! the data to a file on the PC.
//

Just read all the comments at the top of the program. It's the rtfi system.