Merge pull request #1497 from gz/generated-header

Indicate auto-generation in file headers.

Author: ferdikoomen

src/templates/partials/header.hbs

@@ -1,3 +1,4 @@
+/* generated using openapi-typescript-codegen -- do no edit */
 /* istanbul ignore file */
 /* tslint:disable */
 /* eslint-disable */