update Dependencies

examples/trade/README.md

@@ -6,6 +6,21 @@ As a fundamental problem in algorithmic trading, order execution aims at fulfill
 
 ## Environment Dependencies
 
+### Dependencies
+
+```
+gym==0.17.3
+torch==1.6.0
+numba==0.51.2
+numpy==1.19.1
+pandas==1.1.3
+tqdm==4.50.2
+tianshou==0.3.0.post1
+env==0.1.0
+PyYAML==5.4.1
+redis==3.5.3
+```
+
 ### Environment Variable
 
 `EXP_PATH` Absolute path to your config folder, we give folder `exp` as an example.