First pass at reorganizing go code into sub-packages

internal/handlers/util.go

@@ -0,0 +1,23 @@
+package handlers
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+)
+
+func GetURLID(url string) (int64, error) {
+	pieces := strings.Split(strings.Trim(url, "/"), "/")
+	return strconv.ParseInt(pieces[len(pieces)-1], 10, 0)
+}
+
+func GetURLPieces(url string, format string, a ...interface{}) (int, error) {
+	url = strings.Replace(url, "/", " ", -1)
+	format = strings.Replace(format, "/", " ", -1)
+	return fmt.Sscanf(url, format, a...)
+}
+
+func WriteSuccess(w http.ResponseWriter) {
+	fmt.Fprint(w, "{}")
+}