'operation' instead of 'type'. Include 'require' stmts to help

docs/client.md

@@ -15,6 +15,7 @@ with LDAP. If you're not, read the [guide](http://ldapjs.org/guide.html) first.
 
 The code to create a new client looks like:
 
+    var ldap = require('ldapjs');
     var client = ldap.createClient({
       url: 'ldap://127.0.0.1:1389'
     });
@@ -143,8 +144,8 @@ pass in a single `Change` or an array of `Change` objects.
 
 Example:
 
-    var change = new Change({
-      type: 'add',
+    var change = new ldap.Change({
+      operation: 'add',
       modification: {
         pets: ['cat', 'dog']
       }