Change README.md
Change README.md

Emacs seem to be listed twice under Integration. This remove one of them
while preserving the alphabetical order.

regularfry/chruby,eunomie/chgo,postmodern/chruby,eunomie/chgo,kbrock/chruby,postmodern/chruby,ilikepi/chruby,kbrock/chruby,ilikepi/chruby,ngpestelos/chruby,ngpestelos/chruby,regularfry/chruby