tweak the sample code in the README.md file
tweak the sample code in the README.md file

cuevasclemente/go-porterstemmer,jmptrader/go-porterstemmer,kiteco/go-porterstemmer,sajari/go-porterstemmer,blevesearch/go-porterstemmer,Shugyousha/go-porterstemmer,reiver/go-porterstemmer