Add HKP lookup example to README

README.md

@@ -55,6 +55,18 @@ openpgp.generateKeyPair(options).then(function(keypair) {
 });
 ```
 
+#### Public key lookup on HKP server
+```js
+var openpgp = require('openpgp');
+var hkp = new openpgp.HKP('https://pgp.mit.edu');
+
+hkp.lookup({
+    query: 'alice@example.com'
+}).then(function(key) {
+    var publicKey = openpgp.key.readArmored(key);
+});
+```
+
 #### Encryption
 ```js
 var openpgp = require('openpgp');

src/hkp/hkp.js

@@ -44,8 +44,8 @@ function HKP(keyServerBaseUrl, fetch) {
 /**
  * Search for a public key on the key server either by key ID or part of the user ID.
  * @param  {String}   options.keyID   The long public key ID.
- * @param  {String}   options.query   This can be any part of the key user ID such as name.
+ * @param  {String}   options.query   This can be any part of the key user ID such as name
- *   or email address
+ *   or email address.
  * @return {Promise<String>}          The ascii armored public key.
  */
 HKP.prototype.lookup = function(options) {