Added instructions for custom-types (#183)

README.md

@@ -70,6 +70,19 @@ Start the development chain with detailed logging:
 RUST_LOG=debug RUST_BACKTRACE=1 ./target/release/node-template -lruntime=debug --dev
 ```
 
+### Connect with Polkadot-JS Apps Front-end
+
+Once the node template is running locally, you can connect it with **Polkadot-JS Apps** front-end
+to interact with your chain. [Click here](https://polkadot.js.org/apps/#/explorer?rpc=ws://localhost:9944) connecting the Apps to your local node template.
+
+Due to recent Substrate upgrade, paste the following custom types JSON in **Setting** > **Developer**
+
+```json
+{
+  "AccountInfo": "AccountInfoWithDualRefCount"
+}
+```
+
 ### Multi-Node Local Testnet
 
 If you want to see the multi-node consensus algorithm in action, refer to

runtime/types.json

@@ -0,0 +1,3 @@
+{
+  "AccountInfo": "AccountInfoWithDualRefCount"
+}