Initial commit.
Added main class and outline of required methods.
Added loop to take user input re: choice of conversion.
Added code to get user's bin/dec number.
Added to method decimal2binary.
This method now works out the binary number, but to get the correct number it has to reverse its presentation of 1s and 0s. This is still to be coded.

The binary2decimal method has a problem in that the readLine() method doesn't seem to work. It skips over the user input as if they had entered nothing.
Completed method to produce correct binary number.