title: RAML 1.0 include multiple files with resources
body: <p>I want to define REST resources in multiple files and include them in a single RAML file 
  I tried <a href="http://forums.raml.org/t/include-external-resources-raml-file-in-one-uber-file/212/4" rel="nofollow noreferrer">this</a> but i always get RAML errors</p>
  
  <p>Main.raml
      <code>#%RAML 1.0
  title: Main RAML file to include All APIs
  version: v1
  baseUri: http://api.samplehost.com
  /student: !include student.raml</code></p>
  
  <p>student.raml</p>
  
  <p><code>#%RAML 1.0
      title: student APIs
      version: v1
      baseUri: http://api.samplehost.com
      /student:
        get:  # ..etc</code></p>
  
  <p>but I get Unknown Error in the included file: Unknown node: 'title' in Main.raml</p>
  
  <p>when I remove the 'title' from the included file 'student.raml'
  I got Unknown Missing required property 'title' in the student.raml file</p>