add logo and links

Author: yarl

README.md

@@ -1,11 +1,11 @@
-# Montage
+![Logo](https://i.imgur.com/EZD3p9r.png)
 
+## Montage
 *Photo evaluation tool for and by Wiki Loves competitions*
 
 Round-based photo evaluation is a crucial step in the "Wiki Loves"
 series of photography competitions. Montage provides a configurable
 workflow that adapts to the conventions of all groups.
 
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+* [montage on Wikimedia Commons](https://commons.wikimedia.org/wiki/Commons:Montage)
+* [montage on Phabricator](https://phabricator.wikimedia.org/project/view/2287/)