Tweak the readme

Author: ansman

index.html

@@ -438,6 +438,10 @@
           <p>
             Validate.js provides a declarative way of validating javascript objects.
           </p>
+          <p>
+            It is unit tested with 100% code coverage and can be considered fit
+            for production.
+          </p>
           <p>
             The project can be found on <a href="https://github.com/ansman/validate.js">GitHub</a>
             where you can also find our <a href="https://github.com/ansman/validate.js/issues">issue tracker</a>.