Add LICENSE and first command

This commit may be used as template for making any new Telegram bots.
Just check out it, change your variables and start developing new
shiny bot!

Maybe I need to create bot generator...

domains/commands/v1/exported.go

@@ -0,0 +1,25 @@
+// Fantasy World Zookeeper Bot
+// Copyright (c) 2018 Vladimir "fat0troll" Hodakov
+
+package commandsv1
+
+import (
+	"github.com/rs/zerolog"
+	"lab.wtfteam.pro/fat0troll/fw_zookeeper/context"
+	"lab.wtfteam.pro/fat0troll/fw_zookeeper/internal/router"
+)
+
+var (
+	c   *context.Context
+	log zerolog.Logger
+)
+
+// New initializes package
+func New(cc *context.Context) {
+	c = cc
+	log = c.Logger.With().Str("domain", "commands").Int("version", 1).Logger()
+
+	router.RegisterPrivateCommand("start", StartCommand)
+
+	log.Info().Msg("Domain «commands» initialized")
+}

domains/commands/v1/start.go

@@ -0,0 +1,16 @@
+// Fantasy World Zookeeper Bot
+// Copyright (c) 2018 Vladimir "fat0troll" Hodakov
+
+package commandsv1
+
+import (
+	"gitlab.com/toby3d/telegram"
+	itelegram "lab.wtfteam.pro/fat0troll/fw_zookeeper/internal/telegram"
+)
+
+// StartCommand responds to /start message
+func StartCommand(update *telegram.Update) {
+	message := "*Hello, hello, hello*"
+
+	itelegram.RespondWithMarkdown(update.Message.Chat.ID, message)
+}