add module1 outline

Author: Shrreya

module1-introduction-to-backend/README.md

@@ -0,0 +1,42 @@
+# Module 1: Introduction to Backend
+
+## Summary
+Writing backend code requires an intimate understanding of REST and the requestresponse lifecycle. Students learn how to build and run a local server with API endpoints
+using Node.js and Express.js, handle GET, POST, and other HTTP requests, perform
+validations and return a response.
+
+## Outline
+
+1 [Introduction to Backend [R]](../module1-introduction-to-backend/r1-introduction-to-backend/README.md)
+    
+1.1 [Beginners guide to Node.js and NPM [R]](../module1-introduction-to-backend/r1.1-beginners-guide-nodejs-npm/README.md)
+    
+1.2 [Getting ready with Node.js [L]](../module1-introduction-to-backend/r1.2-getting-ready-with-nodejs/README.md)
+    
+2 [HTTP and REST [R]](../module1-introduction-to-backend/r2-http-and-rest/README.md)
+    
+2.1 [Diving into REST APIs [R]](../module1-introduction-to-backend/r2.1-diving-into-rest-apis/README.md)
+    
+2.2 [Testing APIs with Postman [L]](../module1-introduction-to-backend/r2.2-testing-apis-with-postman/README.md)
+    
+3 [Introduction to Express.js [R]](../module1-introduction-to-backend/r3-introduction-to-expressjs/README.md)
+    
+3.1 [Express.js hello world application [L]](../module1-introduction-to-backend/r3.1-expressjs-hello-world/README.md)
+
+3.2 [Express.js real world application [L]](../module1-introduction-to-backend/r3.2-express.js-real-world/README.md)
+
+3.3 [Additional practice with routes/functions on Express application [L]](../module1-introduction-to-backend/r3.3-expressjs-additional-practice/README.md)
+
+3.4 [API best practices [R]](../module1-introduction-to-backend/r3.4-api-best-practices/README.md)
+    
+4 [Server-side Validation [R]](../module1-introduction-to-backend/r4-server-side-validation/README.md)
+    
+4.1 [Server-side validation setup [L]](../module1-introduction-to-backend/r4.1-server-side-validation-setup/README.md)
+
+4.2 [Server-side validation additional practice [L]](../module1-introduction-to-backend/r4.2-validation-additional-practice/README.md)
+
+5 [API Documentation [R]](../module1-introduction-to-backend/r5-api-documentation/README.md)
+    
+5.1 [API Documentation using Swagger [L]](../module1-introduction-to-backend/r5.1-api-documentation-swagger/README.md)
+    
+6 [Outro](../module1-introduction-to-backend/r6-outro/README.md)