Nuget-button is a project mainly written in JavaScript, it's free.
javascript helper for generating nuget button
Javascript helper for generating nuget.org style Install-Package buttons.
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<pre class="nuget-button">Install-Package Facebook</pre>
<pre class="nuget-button" data-nugetbutton-link="false">Install-Package AzureToolkit</pre>
<div style="width: 420px;"><pre class="nuget-button">Install-Package SimpleJson</pre></div>
<div style="float:left;"><pre class="nuget-button">Install-Package FluentHttp.Core</pre></div><div style="clear: left"></div>
<div style="float:left; font-size:0.5em"><pre class="nuget-button">Install-Package FluentHttp.Core</pre></div><div style="clear: left"></div>
<pre class="nuget-button" data-nugetbutton-link="http://nuget.prabir.me/nuget/Packages(Id='Facebook',Version='5.2.0.0')">Install-Package Facebook</pre>
Copyright 2011, Prabir Shrestha
Dual licensed under the MIT or GPL Version 2 licenses.