Add sample python code to readme

Author: meatballs

README.rst

@@ -88,3 +88,41 @@ There is also a command to remove the `bin` directory as well as the object
 files::
 
 	$ make remove
+
+
+Python
+------
+
+The strategy functions are available from within a shared object file,
+`libstrategies.so` and can therefore be called from within Python. An example
+of how to call TitForTat::
+
+.. code:: python
+
+	from ctypes import cdll, c_int, c_float, byref, POINTER
+	# load the strategies library
+	strategies = cdll.LoadLibrary('libstrategies.so')
+
+	# Use the titfortat strategy from the library
+	tft = strategies.ktitfortatc_
+
+	# define the types of the function arguments and return value
+	tft.argtypes = (
+	    POINTER(c_int), POINTER(c_int), POINTER(c_int), POINTER(c_int),
+	    POINTER(c_float))
+	tft.restype = c_int
+
+	# Variables for the argument to pass
+	my_previous = c_int(0)  # 0 is cooperation, 1 is defection
+	their_previous = c_int(1)
+	move_number = c_int(1)
+	my_score = c_int(0)
+	their_score = c_int(0)
+	noise = c_float(0)
+
+	# Call the strategy passing the arguments by reference
+	result = tft(
+	    byref(their_previous), byref(move_number), byref(my_score),
+	    byref(their_score), byref(noise), byref(my_previous))
+
+	print(result)