Note github unpyc3 and..

- Add source to bytecode_2.2/03_class_method.pyc
- more ignore

test/simple_source/def/03_class_method.py

@@ -0,0 +1,13 @@
+# From Decompyle++
+# File: 22_class_method.pyc (Python 2.2)
+# An old-style Python class.
+
+class MyClass:
+
+    def method(self, i):
+        if i is 5:
+            print 'five'
+        elif not (i is 2):
+            print 'not two'
+        else:
+            print '2'