Enhance reachability-analysis' core.py
Enhance reachability-analysis' core.py

Summary: Add __repr__ to the graph class to easily print nodes.

Reviewed By: int3

Differential Revision: D17961502

fbshipit-source-id: 6eb8c6b5553cdb3f7c19507650724c31d5a150e9

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex