slideshow.yml in slideshow-2.3.0

- old
+ new

@@ -68,6 +68,9 @@
   extnames: [ .textile, .t ]
 
 rest:
   extnames: [ .rst, .rest ]
 
+mediawiki:
+  extnames: [ .wiki, .mediawiki, .mw ]
+
 # NB: markdown now configured in markdown.yml (using markdown gem)