Support BuntDB engine.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

config/config.go

@@ -67,6 +67,7 @@ type SectionStat struct {
 	Engine string        `yaml:"engine"`
 	Redis  SectionRedis  `yaml:"redis"`
 	BoltDB SectionBoltDB `yaml:"boltdb"`
+	BuntDB SectionBuntDB `yaml:"buntdb"`
 }
 
 // SectionRedis is sub seciont of config.
@@ -82,6 +83,11 @@ type SectionBoltDB struct {
 	Bucket string `yaml:"bucket"`
 }
 
+// SectionBuntDB is sub seciont of config.
+type SectionBuntDB struct {
+	Path string `yaml:"path"`
+}
+
 // BuildDefaultPushConf is default config setting.
 func BuildDefaultPushConf() ConfYaml {
 	var conf ConfYaml
@@ -130,6 +136,8 @@ func BuildDefaultPushConf() ConfYaml {
 	conf.Stat.BoltDB.Path = "gorush.db"
 	conf.Stat.BoltDB.Bucket = "gorush"
 
+	conf.Stat.BuntDB.Path = "gorush.db"
+
 	return conf
 }