add 'aliases' for complete tag.

zencoding.vim

@@ -1076,6 +1076,11 @@ function! ZenCompleteTag(findstart, base)
         call add(res, item)
       endif
     endfor
+    for item in values(s:zen_settings[type]['aliases'])
+      if stridx(item, a:base) != -1
+        call add(res, item)
+      endif
+    endfor
     return res
   endif
 endfunction