add support for toml configuration file

main.go

@@ -2,9 +2,21 @@ package main
 
 import (
 	"net/http"
+	"github.com/BurntSushi/toml"
 )
 
+type tomlConfig struct {
+	Database databaseConfig
+}
+
+var config tomlConfig
+
 func main() {
+	_, err := toml.DecodeFile("config.toml", &config)
+	if err != nil {
+		panic(err)
+	}
+
 	db, err := prepareDatabase()
 	if err != nil {
 		panic(err)