Fixed XML output

Closes #6 (closed)

libs/routes/api.js

 var express = require('express')
-var xml = require('xml')
+var xml = require('js2xmlparser')
 var router = express.Router()
 
 var libs = process.cwd() + '/libs/'
@@ -42,7 +42,7 @@ router.get('/data', function(req, res) {
     })
 })
 
-router.get('/enrollments.:format?', function(req, res) {
+router.get('/enrollments', function(req, res) {
     var params = req.query;
     var id = 0;
     var location_id = 0;
@@ -121,9 +121,9 @@ router.get('/enrollments.:format?', function(req, res) {
 
     conn.query(enrollmentSql, true).then(function(result) {
         log.debug(result);
-        if (req.params.format === 'csv') {
+        if (req.query.format === 'csv') {
           res.csv(result.data)
-        } else if (req.params.format === 'xml') {
+        } else if (req.query.format === 'xml') {
           res.set('Content-Type', 'text/xml')
           res.send(xml({
             result: result.data