add webpack config sls handler and dynamoose

- changed serverless handler 
- fix webpack config for serverless offline testing
- maked item route with GET method where make a query in a dynamodb table

.babelrc

@@ -1,4 +1,14 @@
 {
-  "plugins": ["@babel/plugin-transform-runtime"],
-  "presets": ["@babel/preset-env"]
+  "plugins": ["source-map-support","@babel/plugin-syntax-dynamic-import"],
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "modules":"commonjs",
+        "targets": {
+          "node": "8.10"
+        }
+      }
+    ]
+  ]
 }

handler.js

@@ -1,9 +1,8 @@
 
-const serverless = require('serverless-http');
-const app = require('./src/app');
-
-module.exports.main = serverless(app);
-
-
+'use strict';
+const awsless = require('aws-serverless-express');
 
+const app = require('./src/app');
+const server = awsless.createServer(app);
 
+exports.main = (event, context) => { awsless.proxy(server, event, context) };