Document WireframeSketcher (Closes: #15065)

wiki/src/contribute/how/user_experience.mdwn

@@ -23,10 +23,9 @@ so that others can benefit from your insight.
 Resources
 =========
 
+  - [[Paper prototyping and *WireframeSketcher*|user_experience/paper_prototyping]]
   - [[Survey platform (*LimeSurvey*)|user_experience/limesurvey]]
   - [[Guidelines for user testing|user_experience/testing]]
-  - [Paper Prototyping](http://alistapart.com/article/paperprototyping),
-    by Shawn Medero
 
 Talk to us
 ==========

wiki/src/contribute/how/user_experience/paper_prototyping.mdwn

+[[!meta title="Paper prototyping"]]
+
+Resources on paper prototyping
+==============================
+
+- [Paper Prototyping](http://alistapart.com/article/paperprototyping) by Shawn Medero
+- [Prototyping: A Practitioner's Guide](http://gen.lib.rus.ec/search.php?req=todd+zaki+warfel+prototyping) by Todd Zaki Warfel
+
+*WireframeSketcher*
+===================
+
+[*WireframeSketcher*](https://wireframesketcher.com/) is a proprietary
+tool to create wireframes. It's super easy to learn, super fast to use
+and works from Tails!
+
+<div class="caution">
+
+<p><span class="application">WireframeSketcher</span> being proprietary
+software, you are not allowed to install it on your Tails if you have to
+comply with most of the security policies of our internal teams. You
+should install it on a dedicated Tails without sensitive
+information.</p>
+
+</div>
+
+To install *WireframeSketcher* in Tails, execute:
+
+    wget https://wireframesketcher.com/downloads/WireframeSketcher-latest_amd64.deb
+    sudo dpkg -i WireframeSketcher-latest_amd64.deb
+    sudo apt-get -f install --yes
+
+Wireframe library for GNOME and Tails
+--------------------------------------
+
+This Git repository contains wireframes from past projects:
+
+<https://github.com/sajolida/tails-wireframes>
+
+In the *generic* folder, you can find reusable wireframes and icons for
+GNOME and Tails, like the desktop or *Files*:
+
+<https://github.com/sajolida/tails-wireframes/tree/master/generic>