Update README.md

README.md

@@ -127,6 +127,8 @@ fun getMAC(tag: Tag): String{
 
 * If you hold a tag against the phone and it is NFC Enabled, your implementation of the methods will be executed.
 
+<p align="center"><img src="snapshot/nfc.gif" alt="nfc"/></p>
+
 ### License
 ```
 Copyright 2020 Romell D.Z.
@@ -142,4 +144,4 @@ 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.
-```
+```