adding-protocols BLE clarification (#1279)

docs/participate/adding-protocols.md

@@ -1,12 +1,12 @@
 # Adding protocols
 
-Adding your device protocol to OpenMQTTGateway enable to increase interoperability and to create new use cases with your device. You will find below some guidance to do that. 
+Adding your device protocol to OpenMQTTGateway enables it to increase interoperability and to create new use cases with your device. Below you will find some guidance to do that. 
 
 ## RF or IR
-For adding RF and IR protocols to OpenMQTTGateway the best way is to do a pull request to [RCSwitch](https://github.com/1technophile/rc-switch), [Pilight](https://github.com/pilight/pilight) for RF and [IRRemoteESP8266](https://github.com/crankyoldgit/IRremoteESP8266) for IR.
+For adding RF and IR protocols to OpenMQTTGateway the best way is to do a pull request to [RCSwitch](https://github.com/1technophile/rc-switch), [Pilight](https://github.com/pilight/pilight) for RF, and [IRRemoteESP8266](https://github.com/crankyoldgit/IRremoteESP8266) for IR.
 
 ## BLE
-For BLE devices you can do a pull request directly to the [OpenMQTTGateway](https://github.com/1technophile/OpenMQTTGateway) repository.
+For BLE message decoding OpenMQTTGateway uses the [Theengs Decoder](https://decoder.theengs.io/) library. New device decoder pull requests can be submitted directly to the [GitHub repository](https://github.com/theengs/decoder).
 
-Currently we support the reading of advertizing BLE devices, advertizing means that the BLE device broadcast regularly its sensor data without the need of a BLE connection.
+Currently we support the reading of advertizing BLE devices, advertizing means that the BLE device broadcasts regularly its sensor data without the need of a BLE connection.