Added Hello World to the stack trace trunkation logic.

Author: BethanyG

runner/__init__.py

@@ -146,7 +146,7 @@ def pytest_exception_interact(self, node, call, report):
             err = excinfo.getrepr(style="no", abspath=False)
 
             # trim off full traceback for first exercise to be friendlier and clearer
-            if 'lasagna' in node.name and 'ImportError' in str(err.chain[0]):
+            if ('lasagna' in node.name or 'hello world') and 'ImportError' in str(err.chain[0]):
                 trace = err.chain[-2][0]
             else:
                 trace = err.chain[-1][0]