prime_test2 README file

To compile:
g++ prime_test2.cpp -o prime_test

Known to compile with (from g++ -v): 
gcc version 4.6.4 (Ubuntu/Linaro 4.6.4-1ubuntu1~12.04) 

No special resources needed. 
No configuration needed.

KNOWN BUGS:
isPrime does not verify that the number is >= 2.
Very large input numbers will cause failure since input scan is not tested.
Text input causes failure.