Example to demonstrate channel operator

[aprabhat]

Add code example let say channel_op.go which demonstrates use of channels in Go

Refer Hello World for reference

https://tour.golang.org/concurrency/2

[monkrus]

Hello, is it still a valid issue? As well as other 'add example type` issues?

[sagar-jadhav]

Hello, @monkrus yes this issue is valid. All the issues with the label v2.0.0 are valid.