Add depends.txt.

unified_skins/README.txt

@@ -1,5 +1,7 @@
 A 3d character model re-texturing api used as the framework for this modpack.
 
+depends: default
+
 Compatible with player skins mod [skins] by Zeg9 and Player Textures [player_textures] by sdzen.
 
 Note: Currently only 64x32px player skins.

unified_skins/depends.txt

@@ -0,0 +1 @@
+default