How do you make it so a resource pack is installed by default?

[needoriginalname]

My friend and I are making a modpack and it includes XtraBlocks mod (Got the mod writter's permission )

However the mod is designed to work with a resource pack, so how can I make it so that a resource pack is enabled by defaut?

[EvilOwl]

A normal technic zip modpack contains bin, mods and config.

Your modpack should include bin, mods, config and resourcepacks.