update readme

.idea/workspace.xml

@@ -2,7 +2,6 @@
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       <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
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@@ -15,14 +14,14 @@
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@@ -69,7 +68,7 @@
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@@ -457,7 +456,7 @@
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README.md

@@ -15,7 +15,7 @@ A Chinese characters recognition repository based on convolutional recurrent net
 
 ## Dev Environments
 1. WIN 10 or Ubuntu 16.04
-2. **PyTorch 1.2.0 (may fix ctc loss)** with cuda 10.0
+2. **PyTorch 1.2.0 (may fix ctc loss)** with cuda 10.0 🔥
 3. yaml
 4. easydict
 5. tensorboardX