docs: Added license in Readme.md

Author: Angad Singh

Readme.md

@@ -34,7 +34,7 @@ Android Library for Custom Switches.
             app:colorBorder="@color/colorAccent"/>
     ```
 
-2. To the reference of Switch in your Activity/Fragment class and set a ToggleListener to it as below:
+2. To the reference of Switch in your Activity/Fragment class set a Toggle Event Handler to it as below:
 
     ```java
         LabeledSwitch labeledSwitch = findViewById(R.id.switch);
@@ -51,4 +51,19 @@ Android Library for Custom Switches.
 
 * Labeled Switch | Designed by - [Shweta Gupta](https://dribbble.com/shwetagupta)
 
-![Labeled Switch](https://raw.githubusercontent.com/Angads25/android-toggle/develop/screenshots/version%201/device-2018-02-21-233623.png)
+![Labeled Switch](https://raw.githubusercontent.com/Angads25/android-toggle/develop/screenshots/version%201/device-2018-02-21-233623.png)
+
+### License
+    Copyright (C) 2018 Angad Singh
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.