add 'expand' parameter to searchJira method and update documentation link

Author: watters

lib/jira.js

@@ -860,7 +860,7 @@ var JiraApi = exports.JiraApi = function(protocol, host, port, username, passwor
     // *  error: string if there's an error
     // *  issues: array of issues for the user
     //
-    // [Jira Doc](http://docs.atlassian.com/jira/REST/latest/#id333082)
+    // [Jira Doc](https://docs.atlassian.com/jira/REST/latest/#d2e4424)
     this.searchJira = function(searchString, optional, callback) {
         // backwards compatibility
         optional = optional || {};
@@ -878,7 +878,8 @@ var JiraApi = exports.JiraApi = function(protocol, host, port, username, passwor
                 jql: searchString,
                 startAt: optional.startAt || 0,
                 maxResults: optional.maxResults || 50,
-                fields: optional.fields || ["summary", "status", "assignee", "description"]
+                fields: optional.fields || ["summary", "status", "assignee", "description"],
+                expand: optional.expand || ['schema', 'names']
             }
         };