Fix: Headers req->camelCase => amel-Case
Fix: Headers req->camelCase => amel-Case

Calling with lowercase first word caused header to be stored as amel-Case instead of Camel-Case
claimsmall/httpful,myorb/httpful,proneoas/httpful,cybercircuits/httpful,infame-io/httpful,nategood/httpful,barracudanetworks/httpful,siwinski/httpful,quafzi/httpful,mojaray2k/httpful