Add Install button to the landing page and docs

docs/intro.md

@@ -12,6 +12,14 @@ it will begin again!
 If you use AMD or Browserify, require in pace.js and call `pace.start()` as early in
 the loading process as is possible.
 
+Install with Eager
+------------------
+
+The easiest way to add Pace to your site is with [Eager](http://eager.io).
+Click Install to see a live preview of Pace on your website.
+
+<iframe style="height: 48px; width: 180px" src="//install.eager.io?appId=kYKTiQjoVjQk" allowtransparency="true" scroll="no" frameBorder="0"></iframe>
+
 Example
 -------
 

docs/welcome/index.html

@@ -432,7 +432,14 @@ <h2>What is Pace?</h2>
                 <p style="text-align: left">Include pace.js and a CSS theme of your choice, and you get a beautiful progress indicator for your page load and ajax navigation.</p>
                 <p style="text-align: left">No need to hook into any of your code, progress is detected automatically.</p>
                 <br/>
+                <h2>Install</h2>
+                <p>The easiest way to add Pace to your site is with <a href="http://eager.io">Eager</a>.
+                <p>Click Install to see a live preview of Pace on your website.</p>
+                <iframe style="height: 48px; width: 180px" src="//install.eager.io?appId=kYKTiQjoVjQk" allowtransparency="true" scroll="no" frameBorder="0"></iframe>
+                <br/>
+                <br/>
                 <h2>Download</h2>
+                <p>If your’re a developer, download Pace directly here:</p>
                 <p><a class="button" href="https://raw.github.com/HubSpot/pace/v0.5.6/pace.min.js">Pace.js</a></p>
                 <br/>
                 <h2>Themes</h2>