Update connect-two-peers-by-key-with-hyperdht.md (#80)

added missing instructions explicitly stating how to edit the client-app index.

howto/connect-two-peers-by-key-with-hyperdht.md

@@ -59,6 +59,7 @@ cd client-app
 pear init -y -t terminal
 npm install hyperdht b4a
 ```
+Alter `client-app/index.js` to the following:
 
 ``` javascript
 import DHT from 'hyperdht'
@@ -83,4 +84,4 @@ pear dev -- <SUPPLY KEY HERE>
 
 The `client-app` will spin up a client, and the public key copied earlier must be supplied as a command line argument for connecting to the server. The client process will log `got connection` into the console when it connects to the server.
 
-Once it's connected, try typing in both terminals.
+Once it's connected, try typing in both terminals.