update readme for integerized LSTM models

README.md

@@ -1,9 +1,15 @@
 tessdata
 ========
 
-These language data files only work with Tesseract 4.
+These language data files only work with Tesseract 4.0.0.
 They are based on the sources in
 [tesseract-ocr/langdata](https://github.com/tesseract-ocr/langdata) on GitHub.
+(still to be updated for 4.0.0 - 20180322)
+
+These have models for legacy tesseract engine (--oem 0) as well as 
+the new LSTM neural net based engine (--oem 1). The LSTM models
+have been updated to have integerized and hence faster versions of 
+[tessdata_best](https://github.com/tesseract-ocr/tessdata_best) on GitHub.
 
 Get language data files for Tesseract 3.04 or 3.05 from the
 [3.04 tree](https://github.com/tesseract-ocr/tessdata/tree/3.04.00).