Update README about both OCR engines in tesseract 4
Update README about both OCR engines in tesseract 4

amitdo/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,stweil/tesseract,amitdo/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,stweil/tesseract,jbarlow83/tesseract,stweil/tesseract,UB-Mannheim/tesseract,UB-Mannheim/tesseract,UB-Mannheim/tesseract,stweil/tesseract,UB-Mannheim/tesseract,amitdo/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,tesseract-ocr/tesseract,stweil/tesseract,amitdo/tesseract