Add q as a debug statement

q is a debugging tool: https://pypi.python.org/pypi/q
diff --git a/pre_commit_hooks/debug_statement_hook.py b/pre_commit_hooks/debug_statement_hook.py
index 432a3f0..8e02480 100644
--- a/pre_commit_hooks/debug_statement_hook.py
+++ b/pre_commit_hooks/debug_statement_hook.py
@@ -7,7 +7,7 @@
 import traceback
 
 
-DEBUG_STATEMENTS = set(['pdb', 'ipdb', 'pudb'])
+DEBUG_STATEMENTS = set(['pdb', 'ipdb', 'pudb', 'q'])
 
 
 DebugStatement = collections.namedtuple(