Update views/index/locations.jade

Warsaw location.

views/index/locations.jade

@@ -40,6 +40,18 @@ ul.locations
 
       [Joshfire]: http://www.joshfire.com/
 
+  li
+    h4#warsaw Warsaw, Poland
+    != address('Pokrzywnicka 3A, Warsaw, Poland')
+    :markdown
+      ### [Node.js Weekend]
+      ##### Pokrzywnicka 3A, Warsaw, Poland
+
+      [Node.js Weekend] will be the host for the Warsaw event - come and enjoy the weekend with free beer and pizza. Contact [@end33r] if you have any questions.
+
+      [Node.js Weekend]: http://nodejsweekend.end3r.com/
+      [@end33r]: http://twitter.com/end33r
+
   li
     h4#tokyo Tokyo, Japan
     != address('東京都中央区日本橋浜町２丁目３１−１', 'maps.google.co.jp')