Merge pull request #8 from erock2112/master

Fix high_test after 65dec86
diff --git a/high_test.py b/high_test.py
index 8c9422b..be5d6d6 100755
--- a/high_test.py
+++ b/high_test.py
@@ -30,7 +30,7 @@
   def IsShellOk(self, cmd):  # pylint: disable=unused-argument
     return True
 
-  def Shell(self, cmd):
+  def Shell(self, cmd, timeout_ms=None):
     data = self._cmds.pop(0)
     assert data[0] == cmd, (data, cmd)
     return data[1], 0