Update vendoring

vendor/github.com/google/go-github/github/activity.go

@@ -12,3 +12,58 @@ package github
 type ActivityService struct {
 	client *Client
 }
+
+// FeedLink represents a link to a related resource.
+type FeedLink struct {
+	HRef *string `json:"href,omitempty"`
+	Type *string `json:"type,omitempty"`
+}
+
+// Feeds represents timeline resources in Atom format.
+type Feeds struct {
+	TimelineURL                 *string  `json:"timeline_url,omitempty"`
+	UserURL                     *string  `json:"user_url,omitempty"`
+	CurrentUserPublicURL        *string  `json:"current_user_public_url,omitempty"`
+	CurrentUserURL              *string  `json:"current_user_url,omitempty"`
+	CurrentUserActorURL         *string  `json:"current_user_actor_url,omitempty"`
+	CurrentUserOrganizationURL  *string  `json:"current_user_organization_url,omitempty"`
+	CurrentUserOrganizationURLs []string `json:"current_user_organization_urls,omitempty"`
+	Links                       *struct {
+		Timeline                 *FeedLink  `json:"timeline,omitempty"`
+		User                     *FeedLink  `json:"user,omitempty"`
+		CurrentUserPublic        *FeedLink  `json:"current_user_public,omitempty"`
+		CurrentUser              *FeedLink  `json:"current_user,omitempty"`
+		CurrentUserActor         *FeedLink  `json:"current_user_actor,omitempty"`
+		CurrentUserOrganization  *FeedLink  `json:"current_user_organization,omitempty"`
+		CurrentUserOrganizations []FeedLink `json:"current_user_organizations,omitempty"`
+	} `json:"_links,omitempty"`
+}
+
+// ListFeeds lists all the feeds available to the authenticated user.
+//
+// GitHub provides several timeline resources in Atom format:
+//     Timeline: The GitHub global public timeline
+//     User: The public timeline for any user, using URI template
+//     Current user public: The public timeline for the authenticated user
+//     Current user: The private timeline for the authenticated user
+//     Current user actor: The private timeline for activity created by the
+//         authenticated user
+//     Current user organizations: The private timeline for the organizations
+//         the authenticated user is a member of.
+//
+// Note: Private feeds are only returned when authenticating via Basic Auth
+// since current feed URIs use the older, non revocable auth tokens.
+func (s *ActivityService) ListFeeds() (*Feeds, *Response, error) {
+	req, err := s.client.NewRequest("GET", "feeds", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	f := &Feeds{}
+	resp, err := s.client.Do(req, f)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return f, resp, nil
+}