Add a wrapper div for two child div's

I have an HTML content on which, would like to add a wrapper div for two div elements

Input:

<div class="section1">section one content</div>
 <div class="section2">section one content</div>

Output:

<div id="sectionwrapper"><div class="section1">section one content</div><div class="section2">section one content</div></div>