Add warning (#235)

Author: DangoDev

bin/cli.js

@@ -29,6 +29,11 @@ Options
   }
 );
 
+console.info(chalk.bold(`✨ swagger-to-ts 2.0`));
+console.info(
+  "This library has been updated to 2.0 with improved generation. If you experience issues you can use the deprecated v1 with `npx @manifoldco/swagger-to-ts@1 …`"
+);
+
 const pathToSpec = cli.input[0];
 const timeStart = process.hrtime();