You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <pages>
      <page pageid="310" ns="0" title="Main Page">
        <revisions>
          <rev user="Admin" comment="An inconsequential edit that is actually just intended to make sure the word &quot;role-playing&quot; appears somewhere on all our important pages. We be trollin&#039; for Google, yo." />
        </revisions>
      </page>
    </pages>
    <general mainpage="Main Page" base="http://sonic.spindash.net/wiki/index.php?title=Main_Page" sitename="SSRP Wiki" generator="MediaWiki 1.20.6" phpversion="5.3.29" phpsapi="cgi-fcgi" dbtype="mysql" dbversion="5.5.44-37.3-log" case="first-letter" rights="" lang="en" fallback8bitEncoding="windows-1252" writeapi="" timezone="CST6CDT" timeoffset="-300" articlepath="/wiki/index.php?title=$1" scriptpath="/wiki" script="/wiki/index.php" variantarticlepath="" server="http://sonic.spindash.net" wikiid="mshipe_wixonix" time="2015-07-25T05:52:04Z" maxuploadsize="104857600">
      <fallback />
    </general>
  </query>
</api>