added unit test for BooleanConverter
added unit test for BooleanConverter

hansjoachim/fitnesse,hansjoachim/fitnesse,jdufner/fitnesse,amolenaar/fitnesse,rbevers/fitnesse,jdufner/fitnesse,amolenaar/fitnesse,amolenaar/fitnesse,jdufner/fitnesse,rbevers/fitnesse,hansjoachim/fitnesse,rbevers/fitnesse