Add a __main__ module

poetry/__main__.py

+import sys
+
+if __name__ == '__main__':
+    from .console import main
+
+    sys.exit(main())

poetry/console/__init__.py

@@ -2,4 +2,4 @@ from .application import Application
 
 
 
 
 def main():
 def main():
-    Application().run()
+    return Application().run()