title: OpenURI::HTTPError: 403 Forbidden
body: <p>i'm using wikipedia-api plugin for get content's pages from wikipedia.
  From some days i receive this error when i try to get the contents:</p>
  
  <pre><code>  page = Wikipedia.find_by_titles('Foo')
  OpenURI::HTTPError: 403 Forbidden
      from /usr/lib/ruby/1.8/open-uri.rb:277:in `open_http'
      from /usr/lib/ruby/1.8/open-uri.rb:616:in `buffer_open'
      from /usr/lib/ruby/1.8/open-uri.rb:164:in `open_loop'
      from /usr/lib/ruby/1.8/open-uri.rb:162:in `catch'
      from /usr/lib/ruby/1.8/open-uri.rb:162:in `open_loop'
      from /usr/lib/ruby/1.8/open-uri.rb:132:in `open_uri'
      from /usr/lib/ruby/1.8/open-uri.rb:518:in `open'
      from /usr/lib/ruby/1.8/open-uri.rb:30:in `open'
      from /home/luca/Programming/nerto_5/vendor/plugins/wikipedia-api/lib/mediawiki.rb:139:in `get_xml'
  </code></pre>
  
  <p>What is that?</p>
  
  <p>How can i do?</p>
  
  <p>thanks</p>