Fixes link, add feature file dummy (#156)

Author: spacether

README.md

@@ -50,7 +50,7 @@ And many more!
 - [Docs for the python generator](https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/blob/master/docs/generators/python.md)
 - [Openapi json schema v3.0.3 unit test spec](https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/blob/master/modules/openapi-json-schema-generator/src/test/resources/3_0/unit_test_spec/3_0_3_unit_test_spec.yaml)
   - [generated client sample code](https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/tree/master/samples/openapi3/client/3_0_3_unit_test/python)
-- [Openapi v3.0.3 general petstore spec, general features](https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/blob/master/modules/openapi-json-schema-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml)
+- [Openapi v3.0.3 general petstore spec, general features](https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/blob/master/modules/openapi-json-schema-generator/src/test/resources/3_0/python/petstore_customized.yaml)
   - [generated client sample code](https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/tree/master/samples/openapi3/client/petstore/python)
 
 ### Can I build here?