Improved description and openssl commands (#41)
Improved description and openssl commands (#41)

* Instructions for client certificate authentication

Instructions for client certificate authentication using curl and
openssl.

* Fixed wrong curl command

* MQTT over WS example with Client Certificate Authentication

Extended the MQTT over WS example (script and config) with Client
Certificate Authentication

* Fix relative link

* Improved description and openssl commands

iwonahahn/iot-starterkit,iwonahahn/iot-starterkit,iwonahahn/iot-starterkit,iwonahahn/iot-starterkit,iwonahahn/iot-starterkit