add license

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Luca Druda
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -37,7 +37,7 @@ Check out the [sample repository](samples) for example code showing how the SDK
 *   [py3_eventhub_logger](samples/py3_eventhub_logger.py) - Redirect logs to Azure Event Hub (Python 3.7+)
 
 
-**The following samples are legacy samples**, they use the sycnhronous API intended for use with Python 2.7, or in compatibility scenarios with later versions. We recommend you use the asynchronous API and Python3 samples above instead.
+**The following samples are legacy samples**, they work with the sycnhronous API intended for use with Python 2.7, or in compatibility scenarios with later versions. We recommend you use the asynchronous API and Python3 samples above instead.
 
 
 *   [py2](samples/py2.py) - Sending telemetry and receiving properties and commands with device connected through **symmetric key** (Python 2.7+)
@@ -229,3 +229,6 @@ To change default behavior, administrator can enable device auto-approval from D
 With automatic approval a device can be provisioned without any manual action and can start sending/receiving data after status changes to "Provisioned"
 
 ![Img](assets/auto_approval.jpg)
+
+## License
+This samples is licensed with the MIT license. For more information, see [LICENSE](./LICENSE)