Updated readme usage section

Author: meynard

README.md

@@ -34,7 +34,12 @@ const result = await parser.parse(event);
 console.log(result.files);
 ```
 
-Sample Lambda implemetation with Cloudformation can be found in http://francismeynard.github.io/aws-upload-document-service.
+**Important**
+Please make sure to enable the "Use Lambda Proxy integration" in API Gateway method Integration request. 
+
+If decided not to enable it for some reason, make sure to pass the required Lambda event parameters in Integration Request -> Mapping Templates section, such as body, headers and isBase64Encoded flag.
+
+Sample Lambda and API Gateway implementation with Cloudformation can be found in [here](http://francismeynard.github.io/aws-upload-document-service).
 
 ## Test
 ```

package.json

@@ -1,7 +1,7 @@
 {
     "name": "lambda-multipart-parser",
-    "version": "0.0.1",
-    "description": "This module will parse the multipart-form containing files and fields from the lambda event object",
+    "version": "0.0.2",
+    "description": "This module will parse the multipart-form containing files and fields from the lambda event object.",
     "main": "index.js",
     "author": "francismeynard",
     "license": "MIT",