Add example to readme

README.md

@@ -12,6 +12,35 @@
 npm install bip39-versioned
 ```
 
+## Example
+
+```js
+const bip39v = require('bip39-versioned');
+
+// Generate P2PKH versioned BIP39 mnemonic
+const mnemonic = bip39v.generateMnemonic(128, bip39v.versions.P2PKH);
+// 'above rack wait angle thank ribbon strategy gallery silk leave brave swarm'
+assert(bip39v.mnemonicToVersionByte(mnemonic) === 0x00);
+assert(bip39v.mnemonicToVersion(mnemonic) === 'P2PKH');
+
+// Generate P2WPKHP2SH versioned BIP39 mnemonic
+const mnemonic = bip39v.generateMnemonic(128, bip39v.versions.P2WPKHP2SH);
+// 'abuse lottery polar torch prison option common common mix moon wonder length'
+assert(bip39v.mnemonicToVersionByte(mnemonic) === 0x01);
+assert(bip39v.mnemonicToVersion(mnemonic) === 'P2WPKHP2SH');
+
+// Generate P2WPKH versioned BIP39 mnemonic
+const mnemonic = bip39v.generateMnemonic(128, bip39v.versions.P2WPKH);
+// 'across sword flip inspire allow joke skate drip icon lady emerge toss'
+assert(bip39v.mnemonicToVersionByte(mnemonic) === 0x02);
+assert(bip39v.mnemonicToVersion(mnemonic) === 'P2WPKH');
+
+// Attempt to get version from a standard non-versioned BIP39 mnemonic
+const mnemonic = 'such galaxy much glimpse music turkey toward exhaust filter key pilot hello';
+assert(bip39v.mnemonicToVersionByte(mnemonic) === 0xD8);
+assert(bip39v.mnemonicToVersion(mnemonic) === 'UNKNOWN');
+```
+
 ## License
 
 MIT © Luke Childs