update readme

README.md

@@ -16,6 +16,50 @@ It need rust nightly version.
 $ rustup default nightly
 ```
 
+### Developing
+```
+$ sudo apt-get install python3-dev python-dev
+$ pip3 install virtualenv ipython
+$ cd pymodule
+$ virtualenv venv
+$ source venv/bin/activate
+(venv) $ pip install -r requirements.txt
+(venv) $ maturin develop
+(venv) $ ipython
+In [1]: import animal_chess_pymodule
+
+In [2]: board = animal_chess_pymodule.Board('l5t/1d3c1/r1p1w1e/7/7/7/E1W1P1R/1C3D1/T5L w - - 0 1')
+
+In [3]: board.generate_all_steps()
+Out[3]:
+[24688,
+ 24673,
+ 24656,
+ 25202,
+ 25187,
+ 25185,
+ 25716,
+ 25701,
+ 25699,
+ 26230,
+ 26198,
+ 26213,
+ 29057,
+ 29042,
+ 29025,
+ 29040,
+ 30085,
+ 30070,
+ 30053,
+ 30068,
+ 32897,
+ 32880,
+ 34422,
+ 34437]
+
+In [4]: board.move_chess(24688)
+```
+
 ### Play
 ```
 $ git clone https://github.com/netcan/AnimalChess.git