Add department name as a search query field

MSU-People-Search-API.raml

 #%RAML 0.8
 title: MSU People Search API
 baseUri: http://hackathon-14.itservices.msu.edu/api/1
-version: v1.1
+version: v1.2
 /persons:
   get:
     queryParameters:
       msunetid:
-        description: Search by person MSU NetID
+        description: Search by person MSU NetID, wildcard is included after string provided.
       lastname:
-        description: Search by person last name
+        description: Search by person last name, wildcard is included after string provided.
       firstname:
-        description: Search by person first name
+        description: Search by person first name, wildcard is included after string provided.
+      departmentname:
+        description: Search by department name, uses wildcard before and after string provided.
     description: Retrieving a record set of people that match the query parameters
   /{msunet}:
     get:

app.js

@@ -43,9 +43,13 @@ app.get('/api/1/persons', function(request, response) {
         console.log(request.query.msunetid);
         opts.filter += '(uid=' + request.query.msunetid + '*)';
     }
+    if(request.query.departmentname !== undefined){
+        console.log(request.query.departmentname);
+        opts.filter += '(departmentNumber=*' + request.query.departmentname + '*)';
+    }
     if(opts.filter === '&'){
         response.json(500, { error:
-            'Please put in a firstname, lastname, or msunetid to search' })
+            'Please put in a firstname, lastname, department name or msunetid to search' })
     }
     console.log('Filter', opts.filter);
     client.search('dc=msu,dc=edu', opts, function(err, res) {