ensure order of routes

[scottcorgan]

• Fix on 1.x
• FIx on 2.x

Right now, since routes are defined in an object only, there is no way to ensure the sort order of the keys. This creates issue when using routes like "**": "index.html" with other routes.

To ensure the order of your routes, use the following route definition syntax:

{
  "routes": [
    {"/some-route": "/some-file.html"},
    {"**": "index.html"}
  ]
}

The main difference is that it is no longer an object, but an array. Then, each route definition is an object. This also sets us up to add some exciting features to routing in the near future!