Add DuckDuckGo query

dotfiles/bmo/uris.ini

@@ -29,6 +29,7 @@
     cd      = http://www.collinsdictionary.com/dictionary/english/%s
     d       = http://www.collinsdictionary.com/dictionary/english/%s
     dd      = http://devdocs.io/%s
+    ddg     = https://duckduckgo.com/html/?q=%s
     deb     = https://packages.debian.org/search?keywords=%s
     fd      = http://foldoc.org/%s
     g       = http://www.google.com/search?q=%s