fixed jquery lib path

Author: fieg

test/buster.js

@@ -1,14 +1,20 @@
 var config = module.exports,
     fs = require('fs'),
     bower = {
-      jquery: JSON.parse(fs.readFileSync('bower_components/jquery/bower.json', 'utf8'))
+      jquery: {
+        main: 'jquery.js'
+      }
     };
 
+if (fs.existsSync('bower_components/jquery/bower.json')) {
+  bower.jquery = JSON.parse(fs.readFileSync('bower_components/jquery/bower.json', 'utf8'))
+}
+
 config["My tests"] = {
   rootPath: "../",
   environment: "browser", // or "node"
   libs: [
-    "bower_components/jquery/" + bower.jquery.main,
+    "bower_components/jquery/" + bower.jquery.main.replace(/^\.\//, ''),
   ],
   sources: [
     "src/callbacks.js",