Document altcoin usage

README.md

@@ -33,6 +33,13 @@ buildOutputScript([
 // '0200e1f505000000001976a914da6473ed373e08f46dd8003fca7ba72fbe9c555e88ac00e1f505000000001976a914759d6677091e973b9e9d99f19c68fbf43e3f05f988ac'
 ```
 
+Send 1 LTC to `Lf8hucmupbtenQ3VPdxvvJ8gTfAsaon2gf`
+
+```js
+buildOutputScript([['Lf8hucmupbtenQ3VPdxvvJ8gTfAsaon2gf', 100000000]]);
+// '0100e1f505000000001976a914da6473ed373e08f46dd8003fca7ba72fbe9c555e88ac'
+```
+
 ## License
 
 MIT © Luke Childs