Adding Python DFA Reporting API Samples.

Reviewed in https://codereview.appspot.com/26070044/.
diff --git a/.hgignore b/.hgignore
index b83fd96..dc9cf78 100644
--- a/.hgignore
+++ b/.hgignore
@@ -19,3 +19,6 @@
 dist/*
 snapshot/*
 MANIFEST
+.project
+.pydevproject
+.settings/*