restored the description in readme

Author: shubhamUpadhyayInBlue

README.md

@@ -1,8 +1,14 @@
 # sib-api-v3-sdk
 
-SibApiV3Sdk - JavaScript client for sib-api-v3-sdk
-SendinBlue provide a RESTFul API that can be used with any languages. With this API, you will be able to :   - Manage your campaigns and get the statistics   - Manage your contacts   - Send transactional Emails and SMS   - and much more...  You can download our wrappers at https://github.com/orgs/sendinblue  **Possible responses**   | Code | Message |   | :-------------: | ------------- |   | 200  | OK. Successful Request  |   | 201  | OK. Successful Creation |   | 202  | OK. Request accepted |   | 204  | OK. Successful Update/Deletion  |   | 400  | Error. Bad Request  |   | 401  | Error. Authentication Needed  |   | 402  | Error. Not enough credit, plan upgrade needed  |   | 403  | Error. Permission denied  |   | 404  | Error. Object does not exist |   | 405  | Error. Method not allowed  |   | 406  | Error. Not Acceptable  | 
-This SDK is automatically generated by the [Swagger Codegen](https://github.com/swagger-api/swagger-codegen) project:
+# SendinBlue's API v3 Node.js Library
+
+SendinBlue's API exposes the entire SendinBlue features via a standardized programmatic interface. Please refer to the full [documentation](https://developers.sendinblue.com) to learn more.
+
+This is the wrapper for the API. It implements all the features of the API v3. It supports promises.
+
+SendinBlue's API matches the [OpenAPI v2 definition](https://www.openapis.org/). The specification can be downloaded [here](https://api.sendinblue.com/v3/swagger_definition.yml).
+
+This library is automatically generated by the [Swagger Codegen](https://github.com/swagger-api/swagger-codegen) project and is reviewed and maintained by SendinBlue:
 
 - API version: 3.0.0
 - Package version: 8.4.0