Have client print result.

This means even if returning results goes horribly wrong, perhaps
the user will still be able to fetch them from the GridEngine output files.

sheepdog/client.py

@@ -72,6 +72,7 @@ def run(self):
             raise RuntimeError("Must call `get_details` before `run`.")
         try:
             self.result = self.func(*self.args)
+            print(self.result)
         except:
             self._submit_error(traceback.format_exc())