Add IBC Hello World tutorial

.vuepress/config.js

@@ -30,6 +30,11 @@ module.exports = {
         {
           title: "Tutorials",
           children: [
+            {
+              title: "IBC Hello World",
+              path: "/hello-world/tutorial/",
+              directory: true,
+            },
             {
               title: "Voter",
               path: "/voter/",
@@ -193,6 +198,7 @@ module.exports = {
     ],
   ],
   patterns: [
+    'hello-world/tutorial/*.md',
     'burner-chain/*.md',
     'README.md',
     'nameservice/tutorial/*.md',

README.md

@@ -3,6 +3,13 @@ layout: home
 title: Cosmos SDK Tutorials
 description: Tutorials for the Cosmos SDK
 sections:
+  - title: IBC Hello World
+    desc: Build a Hello World blockchain app as an IBC module. Learn how to use the relayer to connect two blockchains with each other and use IBC packets to transfer data from one blockchain to another.
+    url: /hello-world/tutorial/index.md
+    difficulty: beginner
+    tags: 
+      - starport
+      - stargate
   - title: Voter
     desc: Build a voting application with a web-based UI.
     url: /voter/