Create borders around markdown-tables

Closes bootprint-openapi#52
- Marked is now configured so that tables are rendered with the classes
  "table table-bordered" to make them look more like the swagger-editor

test/table-in-description/swagger.yaml

@@ -0,0 +1,20 @@
+# this is an example of the Uber API
+# as a demonstration of an API spec in YAML
+swagger: '2.0'
+info:
+  title: Test
+  description: |
+               | A         | B          |
+               | --------- | ---------- |
+               | someKey   | SomeValue  |
+  version: "1.0.0"
+# the domain of the service
+host: api.uber.com
+# array of all schemes that your API supports
+schemes:
+  - https
+# will be prefixed to all paths
+basePath: /v1
+produces:
+  - application/json
+paths: []

test/table-in-description/table-in-description-spec.js

@@ -0,0 +1,23 @@
+/*!
+ * bootprint-swagger <https://github.com/nknapp/bootprint-swagger>
+ *
+ * Copyright (c) 2015 Nils Knappmeier.
+ * Released under the MIT license.
+ */
+
+/* global describe */
+/* global it */
+/* global before */
+var expect = require('chai').expect
+var core = require('../core')
+
+describe('The response-examples fixture', function () {
+  this.timeout(10000)
+  var context = {}
+  before(function () {
+    return core.run(require.resolve('./swagger.yaml'), __dirname, context)
+  })
+  it('should render tables inside markdown with borders', function () {
+    expect(context.$('table').first().attr('class')).to.equal('table table-bordered')
+  })
+})