Command Line Porterstemmer
usage:
java -cp PorterStemmerGradle-1.0.jar uk.ac.ucl.PorterStemmer arg1 arg2 #stems the words "arg1" and "arg2"
java -cp PorterStemmerGradle-1.0.jar uk.ac.ucl.PorterStemmer file://arg1.txt #Stems each line in file arg.txt. One word per line, please