Initial commit.
Changed around for this project.
Need JUNIT for testing
Changed around structure of files. Implemented constructor for CalculatorGUI and main method. Action listener inner classes are still stubs
Now calculator pops up in ant run.
Now user cannot type in JTextField, and implemented Calculator logic
Implemented actionlisteners for numListener and operator listener
Now fully functional with all action listeners implemented
Merge pull request #2 from Daized/master

utilities-calculator (resolves issue #1)