func letterPhraser(res http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
letter := vars["letter"]
phrase := response.Phrase{adjectives.OneStartingWith(letter), animals.OneStartingWith(letter)}
fmt.Fprintln(res, response.BuildResponse(req, phrase, res))
}
func randomPhraser(res http.ResponseWriter, req *http.Request) {
phrase := response.Phrase{adjectives.OneRandom(), animals.OneRandom()}
fmt.Fprintln(res, response.BuildResponse(req, phrase, res))
}
func alliterativePhraser(res http.ResponseWriter, req *http.Request) {
adj := adjectives.OneRandom()
phrase := response.Phrase{adj, animals.OneStartingWith(adj[:1])}
fmt.Fprintln(res, response.BuildResponse(req, phrase, res))
}