Merge pull request #305 from andrewrynhard/fix_#303

Fix #303

pkg/omf/functions/bundle/omf.bundle.add.fish

 function omf.bundle.add -a type name_or_url
   set -l bundle $OMF_CONFIG/bundle
+
+  if test -L $OMF_CONFIG/bundle
+    set bundle (readlink $OMF_CONFIG/bundle)
+  end
+
   set -l record "$type $name_or_url"
 
   if test -f $bundle

pkg/omf/functions/bundle/omf.bundle.remove.fish

 function omf.bundle.remove
-    set bundle $OMF_CONFIG/bundle
+    set -l bundle $OMF_CONFIG/bundle
+
+    if test -L $OMF_CONFIG/bundle
+      set bundle (readlink $OMF_CONFIG/bundle)
+    end
 
     if test -f $bundle
       set type $argv[1]