Added TODO.
Added TODO.

alexarchambault/shapeless,tek/shapeless,triggerNZ/shapeless,milessabin/shapeless,lukasz-golebiewski/shapeless,TomasMikula/shapeless,khronnuz/shapeless,malcolmgreaves/shapeless,Atry/shapeless,liff/shapeless,joescii/shapeless,fthomas/shapeless,roberth/shapeless,clhodapp/shapeless,retronym/shapeless,notxcain/shapeless,wheaties/shapeless,isaka/shapeless,lambdista/shapeless