docs: add links to FAQ

Author: pkozlowski-opensource

CONTRIBUTING.md

@@ -1,5 +1,7 @@
 ## Got a question or problem?
 
+Firstly, please go over our FAQ: https://github.com/angular-ui/bootstrap/wiki/FAQ
+
 Please, do not open issues for the general support questions as we want to keep GitHub issues for bug reports and feature requests. You've got much better chances of getting your question answered on [StackOverflow](http://stackoverflow.com/questions/tagged/angular-ui-bootstrap) where maintainers are looking at questions questions tagged with `angular-ui-bootstrap`.
 
 StackOverflow is a much better place to ask questions since:

README.md

@@ -26,6 +26,10 @@ Project files are also available through your favourite package manager:
 * **Bower**: `bower install angular-bootstrap`
 * **NuGet**: https://nuget.org/packages/Angular.UI.Bootstrap/
 
+## FAQ
+
+https://github.com/angular-ui/bootstrap/wiki/FAQ
+
 ## Supported browsers
 
 Directives from this repository are automatically tested with the following browsers:

misc/demo/index.html

@@ -169,6 +169,8 @@ <h3>CSS</h3>
                     <p>Original Bootstrap's CSS depends on empty <code>href</code> attributes to style cursors for several components (pagination, tabs etc.).
                     But in AngularJS adding empty <code>href</code> attributes to link tags will cause unwanted route changes. This is why we need to remove empty <code>href</code> attributes from directive templates and as a result styling is not applied correctly. The remedy is simple, just add the following styling to your application: <pre><code>.nav, .pagination, .carousel, .panel-title a { cursor: pointer; }</code></pre>
                     </p>
+                    <h3>FAQ</h3>
+                    <p>Please check <a href="https://github.com/angular-ui/bootstrap/wiki/FAQ" target="_blank">our FAQ section</a> for common problems / solutions.</p>
                 </section>
                 <% demoModules.forEach(function(module) { %>
                     <section id="<%= module.name %>">