update readme.md

README.md

@@ -18,9 +18,8 @@ const notifAddr = pcode.getNotificationAddress();
 ### Testnet
 
 ```
-const bitcoinjs = require('bitcoinjs-lib');
 const bip47 = require('bip47-js');
-const networks = bitcoinjs.networks;
+const networks = bip47.utils.networks;
 
 
 const b58PCode = 'PM8TJTLJbPRGxSbc8EJi42Wrr6QbNSaSSVJ5Y3E4pbCYiTHUskHg13935Ubb7q8tx9GVbh2UuRnBc3WSyJHhUrw8KhprKnn9eDznYGieTzFcwQRya4GA';