Add support for satisfaction rating resources

Closes cloudbees-oss#114

Author: stephenc

src/main/java/org/zendesk/client/v2/Zendesk.java

@@ -36,6 +36,7 @@
 import org.zendesk.client.v2.model.Organization;
 import org.zendesk.client.v2.model.OrganizationField;
 import org.zendesk.client.v2.model.OrganizationMembership;
+import org.zendesk.client.v2.model.SatisfactionRating;
 import org.zendesk.client.v2.model.SearchResultEntity;
 import org.zendesk.client.v2.model.Status;
 import org.zendesk.client.v2.model.SuspendedTicket;
@@ -1470,6 +1471,27 @@ public void updateInstallation(int id, String json) {
        complete(submit(req("PUT", tmpl("/apps/installations/{id}.json").set("id", id), JSON, json.getBytes()), handleStatus()));
     }
 
+    public Iterable<SatisfactionRating> getSatisfactionRatings() {
+        return new PagedIterable<SatisfactionRating>(cnst("/satisfaction_ratings.json"),
+                handleList(SatisfactionRating.class, "satisfaction_ratings"));
+    }
+
+    public SatisfactionRating getSatisfactionRating(long id) {
+        return complete(submit(req("GET", tmpl("/satisfaction_ratings/{id}.json").set("id", id)),
+                handle(SatisfactionRating.class, "satisfaction_rating")));
+    }
+
+    public SatisfactionRating createSatisfactionRating(long ticketId, SatisfactionRating satisfactionRating) {
+        return complete(submit(req("POST", tmpl("/tickets/{ticketId}/satisfaction_rating.json")
+                        .set("ticketId", ticketId), JSON,
+                json(Collections.singletonMap("satisfaction_rating", satisfactionRating))),
+                handle(SatisfactionRating.class, "satisfaction_rating")));
+    }
+
+    public SatisfactionRating createSatisfactionRating(Ticket ticket, SatisfactionRating satisfactionRating) {
+        return createSatisfactionRating(ticket.getId(), satisfactionRating);
+    }
+
     // TODO search with sort order
     // TODO search with query building API