Benchmarking faas-nomadd

To bench mark a function for testing things like scaling you can use the bench tool.

1. Install bench go get github.com/nicholasjackson/bench/bench
2. Change the address of the function to test in faas.go
3. Build the plugin go build faas.go
4. Run bench $bench run -duration 100s -plugin ./faas -thread 10