add the model description in 1xt2x doc

examples/other/1xt2x/README.md

@@ -2,10 +2,17 @@
 
 Convert Deepspeech 1.8 released model to 2.x.
 
-## Model
+## Model source directory
 * Deepspeech2x
 
-## Exp
+## Expriment directory
 * baidu_en8k
 * aishell
 * librispeech
+
+# The released model
+Acoustic Model |  Training Data | Hours of Speech | Token-based | CER | WER 
+:-------------:| :------------:| :------: | :------: | :-----------------: |
+Ds2 Offline Aishell 1xt2x model| Aishell | 151 h | Char-based | 0.080447 | |
+Ds2 Offline Librispeech 1xt2x model | Librispeech Dataset | 960 h | Word-based | | 0.068548 |
+Ds2 Offline Baidu en8k 1x2x model | Baidu Internal English Dataset | 8628 h |Word-based | | 0.054112 |