title: Space in attribute value gets replaced by " (quotation mark)
body: <p>When I insert a string with whitespace as an attribute value it gets replaced by a quotation mark.
  For example,</p>
  
  <pre><code>@foreach (string file in files) {
      &lt;div class="item active"&gt;
         &lt;img class="img-responsive" src=@file alt="Book cover"&gt;
      &lt;/div&gt;
  }
  </code></pre>
  
  <p>It gets rendered as</p>
  
  <pre><code>&lt;div class="item active"&gt;
      &lt;img class="img-responsive"     src="c:\users\raghav" sharma\documents\visual="" studio="" 2013\projects\bookhive\bookhive\content\images\0007282311-1.jpg="" alt="Book cover"&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>It's really pissing me off. I don't know why this happens I've searched the whole internet but got nothing so far.</p>