missing property hidden for posts

Adding a bool for the hidden state.
# Conflicts:
#	RedditSharp/Things/Post.cs

Author: czf

RedditSharp/Things/Post.cs

@@ -34,6 +34,18 @@ public Post(IWebAgent agent, JToken json) : base(agent, json)
         }
         #pragma warning restore 1591
 
+        /// <summary>
+        /// Returns true if post is marked as spoiler
+        /// </summary>
+        [JsonProperty("spoiler")]
+        public bool IsSpoiler { get; set; }
+        
+        /// <summary>
+        /// Returns true if this post is hidden
+        /// </summary>
+        [JsonProperty("hidden")]
+        public bool IsHidden { get; set; }
+        
         /// <summary>
         /// Domain of this post.
         /// </summary>