Minor change to CLI UX

flight.py

@@ -249,9 +249,6 @@ def main():
         # We're expecting ctrl-C will end the program, hide the exception from
         # the user.
         pass
-    except Exception:
-        log.exception('Exception in main loop! Stopping execution.')
-        raise
     finally:
         if cleanup_function is not None:
             cleanup_function()

orbitx/__init__.py

@@ -17,7 +17,7 @@
 if not hasattr(sys, 'frozen'):
     # Made sure we're not in a frozen binary, like a distributed .exe file.
     # If this file doesn't exist, we must be running as orbitx.exe.
-    assert target_file.is_file()
+    assert target_file.is_file(), '----- Remember to run "make build"!! -----'
     with open(target_file, 'r') as grpc_py:
         replaced_file = grpc_py.read().replace(
             '\nimport orbitx_pb2', '\nfrom . import orbitx_pb2')