add synopsis section

README.md

@@ -14,6 +14,41 @@ aims to release v1.0 before 11/14
 - Stream integration (user data websocket)
 - PnL calculation.
 
+## Synopsis
+
+_**still under construction**_
+
+```go
+import (
+    "github.com/c9s/bbgo"
+)
+
+mysqlURL := viper.GetString("mysql-url")
+mysqlURL = fmt.Sprintf("%s?parseTime=true", mysqlURL)
+db, err := sqlx.Connect("mysql", mysqlURL)
+
+if err != nil {
+    return err
+}
+
+t := bbgo.New(bbgo.Config{
+    DB: db,
+})
+t.AddNotifier(slacknotifier.New(slackToken))
+t.AddLogHook(slacklog.NewLogHook(slackToken))
+
+t.AddExchange("binance", binance.New(viper.Getenv("bn-key"), viper.Getenv("bn-secret")))).
+    Subscribe("binance", "btcusdt", "kline@5m", "book", "trade").
+    AddStrategy(bondtrade.New, bondtrade.New).
+    Symbols("btcusdt", "bnbusdt")
+
+t.AddExchange("max", max.New(viper.Getenv("max-key"), viper.Getenv("max-secret")))).
+    Subscribe("max", "btctwd", "kline@5m", "book", "trade").
+    AddStrategy(flashdrop.New, bondtrade.New)
+
+t.AddCrossExchangeStrategy(hedgemaker.New(...))
+```
+
 ## License
 
 MIT License