Improved README layout.
Improved README layout.

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