Added my name to challenger.js
Added my name to challenger.js

raphamorim/write-code-every-day,arthurvasconcelos/write-code-every-day,raphamorim/write-code-every-day,pablobfonseca/write-code-every-day,arthurvasconcelos/write-code-every-day,arthurvasconcelos/write-code-every-day,pablobfonseca/write-code-every-day,raphamorim/write-code-every-day,pablobfonseca/write-code-every-day