Add react-headroom to package.json :grin:
Add react-headroom to package.json :grin:

- Sometimes we forget to type --save when adding
  a npm package :sweat_smile:

Signed-off-by: Felipe Milani <6def120dcec8fcb28aed4723fac713cfff66d853@gmail.com>

fmilani/contatempo,fmilani/contatempo