updated readme.md
updated readme.md

chrismattmann/tika-similarity,YongchaoShang/tika-img-similarity,harsham05/tika-similarity,harsham05/tika-similarity,chrismattmann/tika-img-similarity,chrismattmann/tika-similarity,chrismattmann/tika-img-similarity,YongchaoShang/tika-img-similarity