Update __main__.py to fix #33 (#34)

Fix #33

Author: rochacbruno

project_name/__main__.py

@@ -1,6 +1,6 @@
 """Entry point for project_name."""
 
-from .cli import main  # pragma: no cover
+from project_name.cli import main  # pragma: no cover
 
 if __name__ == "__main__":  # pragma: no cover
     main()