Merge fixes/oh-my-struct-constructor into features/using-cache-manager

Author: shana

src/GitHub.Api/Git/GitBranch.cs

@@ -2,12 +2,33 @@
 
 namespace GitHub.Unity
 {
+    interface ITreeData
+    {
+        string Name { get; }
+        bool IsActive { get; }
+    }
+
     [Serializable]
-    public struct GitBranch
+    public struct GitBranch : ITreeData
     {
-        public string Name;
-        public string Tracking;
-        public bool IsActive;
+        public static GitBranch Default = new GitBranch();
+
+        public string name;
+        public string tracking;
+        public bool isActive;
+
+        public string Name { get { return name; } }
+        public string Tracking { get { return tracking; } }
+        public bool IsActive { get { return isActive; } }
+
+        public GitBranch(string name, string tracking, bool active)
+        {
+            Guard.ArgumentNotNullOrWhiteSpace(name, "name");
+
+            this.name = name;
+            this.tracking = tracking;
+            this.isActive = active;
+        }
 
         public override string ToString()
         {