[WIP] Add new Project API Preview (#1480)

Add Projects API client (preview)

Octokit/Models/Request/ProjectUpdate.cs

@@ -0,0 +1,36 @@
+using System.Diagnostics;
+using System.Globalization;
+
+namespace Octokit
+{
+    [DebuggerDisplay("{DebuggerDisplay,nq}")]
+    public class ProjectUpdate
+    {
+        public ProjectUpdate()
+        {
+        }
+
+        /// <summary>
+        /// The new name of the project.
+        /// </summary>
+        public string Name { get; set; }
+
+        /// <summary>
+        /// The new body of the project.
+        /// </summary>
+        public string Body { get; set; }
+
+        /// <summary>
+        /// The new state of the project.
+        /// </summary>
+        public ItemState? State { get; set; }
+
+        internal string DebuggerDisplay
+        {
+            get
+            {
+                return string.Format(CultureInfo.InvariantCulture, "Name: {0}, Body: {1}", Name, Body);
+            }
+        }
+    }
+}