got a basic reward function working

Author: bitcointroy

cc2/reward.py

@@ -1,2 +1,10 @@
 def reward(R, gamma):
-	return -1.0  # TODO
+    # return -1.0
+    k = 0
+    total = 0
+    coef = gamma**k
+    while coef > 0.000001:
+        total += coef * R
+        k += 1
+        coef = gamma**k
+    return total