Allow cross domain AJAX Requests

[bbalet]

If you want to distribute your lib as a standalone web server (A), then you have to take into account that other developpers using it might have their own web server (B) in their go app. Please patch you lib to allow web pages served by B to request server A.

func Search(w http.ResponseWriter, r *http.Request) {
    vars := mux.Vars(r)
    query := vars["query"]

    searchResult := CleoSearch(m.iIndex, m.fIndex, query)
    sort.Sort(ByScore{searchResult})
    myJson, _ := json.Marshal(searchResult)

    // allow cross domain AJAX requests
        w.Header().Set("Access-Control-Allow-Origin", "*")
    fmt.Fprintf(w, string(myJson))
}

[jamra]

Deemed unnecessary by #6