Add .pyc to gitignore.

Fix missing header.

Change-Id: Ib74e8f13323cb2e8c0962a7e072eec0ab275215b
diff --git a/.gitignore b/.gitignore
index 84dbe1d..11b82f0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 MANIFEST
 .tox
 
+*.pyc