Merge branch 'hogiyogi597-issue83-remove-from-obj-and-array' into develop

* hogiyogi597-issue83-remove-from-obj-and-array:
  Added the ability to remove elements from JsonData objects as well as JsonData arrays.

Author: devlead

src/LitJson/JsonData.cs

@@ -819,6 +819,25 @@ public int Add (object value)
             return EnsureList ().Add (data);
         }
 
+        public bool Remove(object obj)
+        {
+            json = null;
+            if(IsObject)
+            {
+                JsonData value = null;
+                if (inst_object.TryGetValue((string)obj, out value))
+                    return inst_object.Remove((string)obj) && object_list.Remove(new KeyValuePair<string, JsonData>((string)obj, value));
+                else
+                    throw new KeyNotFoundException("The specified key was not found in the JsonData object.");
+            }
+            if(IsArray)
+            {
+                return inst_array.Remove(ToJsonData(obj));
+            }
+            throw new InvalidOperationException (
+                    "Instance of JsonData is not an object or a list.");
+        }
+
         public void Clear ()
         {
             if (IsObject) {

test/JsonDataTest.cs

@@ -231,6 +231,49 @@ public void NullValue ()
             Assert.AreEqual (json, data.ToJson ());
         }
 
+        [Test]
+        public void RemoveValueFromObject()
+        {
+            string json = "{\"test1\":1}";
+
+            JsonData data = new JsonData();
+            data["test1"] = 1;
+            data["test2"] = 2;
+            data.Remove("test2");
+
+            Assert.AreEqual(json, data.ToJson());
+        }
+
+        [Test]
+        public void RemoveValueFromNestedObject()
+        {
+            string json = "{\"test1\":{\"test3\":3}}";
+
+            JsonData data = new JsonData();
+            data["test1"] = new JsonData();
+            data["test1"]["test2"] = 2;
+            data["test1"]["test3"] = 3;
+            data["test1"].Remove("test2");
+
+            Assert.AreEqual(json, data.ToJson());
+        }
+
+        [Test]
+        public void RemoveValueFromArray()
+        {
+            string json = "[\"test1\",2.0]";
+
+            JsonData data = new JsonData();
+            data.Add("test1");
+            data.Add("test2");
+            data.Remove("test2");
+            data.Add(1);
+            data.Add(2.0);
+            data.Remove(1);
+
+            Assert.AreEqual(json, data.ToJson());
+        }
+
         [Test]
         public void PropertiesOrderTest ()
         {