Blynk Board Connection/Sketch Usage

Hi - I have several I2C sensors connected to SparkFun RedBoard (like Arduino Uno) and have that working. I have ordered the IOT kit with SparkFun Blynk board to complete my IOT project - goal is to view the sensor data on my iOS device using Blynk app. I am trying to find out how I connect my setup to the the Blynk Board. Has anybody tried this and if so how does the Blynk Board connect to the RedBoard and are there any example sketches for this?

Any pointers would be helpful. Thanks.