fix #163

you can set the delimiter like this

beego.TemplateLeft="{#"
beego.TemplateRight="#}"

or can set the config file like app.ini

templateleft={#
templateright=#}

@@ -48,6 +48,8 @@ var (
 	EnableXSRF           bool
 	XSRFExpire           int
 	CopyRequestBody      bool //When in raw application, You want to the reqeustbody
+	TemplatLeft          string
+	TemplatRight         string
 )
 
 func init() {
@@ -78,6 +80,8 @@ func init() {
 	ErrorsShow = true
 	XSRFKEY = "beegoxsrf"
 	XSRFExpire = 60
+	TemplatLeft = "{{"
+	TemplatRight = "}}"
 	ParseConfig()
 	runtime.GOMAXPROCS(runtime.NumCPU())
 }

@@ -198,6 +198,12 @@ func ParseConfig() (err error) {
 		if expire, err := AppConfig.Int("xsrfexpire"); err == nil {
 			XSRFExpire = expire
 		}
+		if tplleft := AppConfig.String("templateleft"); tplleft != "" {
+			TemplatLeft = tplleft
+		}
+		if tplright := AppConfig.String("templateright"); tplright != "" {
+			TemplatRight = tplright
+		}
 	}
 	return nil
 }

@@ -112,7 +112,7 @@ func BuildTemplate(dir string) error {
 		return err
 	}
 	for k, v := range self.files {
-		BeeTemplates[k] = template.Must(template.New("beegoTemplate" + k).Funcs(beegoTplFuncMap).ParseFiles(v...))
+		BeeTemplates[k] = template.Must(template.New("beegoTemplate"+k).Funcs(beegoTplFuncMap).ParseFiles(v...)).Delims(TemplatLeft, TemplatRight)
 	}
 	return nil
 }