Add Api preset in constructor by default

Author: shockey

src/core/index.js

@@ -65,6 +65,7 @@ module.exports = function SwaggerUI(opts) {
     // Initial set of plugins ( TODO rename this, or refactor - we don't need presets _and_ plugins. Its just there for performance.
     // Instead, we can compile the first plugin ( it can be a collection of plugins ), then batch the rest.
     presets: [
+      ApisPreset
     ],
 
     // Plugins; ( loaded after presets )