grains: Add parameter to exercise placeholder to fix exercism#560

MojitoMonday · ilya-khadykin · commit 3afa32cb9620 · 2017-10-11T08:59:46.000+03:00
diff --git a/exercises/grains/grains.py b/exercises/grains/grains.py
@@ -1,6 +1,6 @@
-def on_square():
+def on_square(integer_number):
     pass
 
 
-def total_after():
+def total_after(integer_number):
     pass
