added poll and example of poll sending

Author: Jibek100

examples/sendPoll.py

@@ -0,0 +1,15 @@
+from whatsapp_api_client_python import API
+
+greenAPI = API.GreenApi(
+    "1101000001", "d75b3a66374942c5b3c019c698abc2067e151558acbd412345"
+)
+
+
+def main():
+    response = greenAPI.sending.sendPoll("11001234567@c.us", "Please choose the color:", [{"optionName": "green"}, {"optionName": "red"}, {"optionName": "blue"}])
+
+    print(response.data)
+
+
+if __name__ == '__main__':
+    main()