Add search query for YouTube

dotfiles/bmo/uris.ini

@@ -47,3 +47,4 @@
     tldr    = http://www.ostera.io/tldr.jsx/#/%s
     w       = http://en.wikipedia.org/wiki/%s
     wa      = https://www.wolframalpha.com/input/?i=%s
+    yt      = https://www.youtube.com/results?search_query=%s