finish some public api

rename public service

apis/public/get_news.go

@@ -0,0 +1,28 @@
+package public
+
+import (
+	"time"
+
+	"github.com/XingfenD/rainyun_api_go_sdk/constant"
+)
+
+type GetNewsResponse struct {
+	Code int               `json:"code"`
+	Data []RainyunNewsItem `json:"data"`
+}
+
+type RainyunNewsItem struct {
+	Type      string    `json:"Type"`
+	Title     string    `json:"Title"`
+	TimeStamp time.Time `json:"TimeStamp"`
+	URL       string    `json:"URL"`
+}
+
+func (s *PublicService) GetNews() (*GetNewsResponse, error) {
+	path := "/news"
+
+	var resp GetNewsResponse
+	err := s.client.Do(constant.HTTPMethod_GET, path, nil, &resp)
+
+	return &resp, err
+}