Update piwik-analytics.md
The document was updated by a better description of the codes.
-This is a ...
+This documents provides the basic information on our Piwik/WoN implementation.
+In general, we use event tracking feature of Piwik for our analytics.
-Event documentation:
+You can find the event documentation of Piwik here:
https://piwik.org/docs/event-tracking/
-An example JavaScript Tracking Code:
+As it is described in the documentation of Piwik a JavaScript Tracking Code has to be added to every page that uses Piwik. Since Won consists of only one page, this has only used once.
+An example JavaScript Tracking Code:
```HTML
<!-- Piwik -->
<script type="text/javascript">
@@ -25,7 +27,7 @@ An example JavaScript Tracking Code:
<!-- End Piwik Code -->
```
-Some examples:
+Here are some examples of event tracking by Piwik:
```HTML
<a href="http://localhost/test1/" onclick="javascript:_paq.push(['trackEvent', 'Menu', 'Freedom']);">Freedom page</a>
