Rename to heroku-bench from Vulcan.

Need  to add proper attribution to @ddolar
Bench command prototype.
Commandline options for concurrency and number of requests, defaults at 1k and 10k respectively
Working prototype using server role
add copy for credit
Add ability to run multiple dynos as the same time. Now the fun starts
update naming scheme and approach for passing arguments. More flexibile and familiar to people who know ab
Average, sum and summarize output acrossd dynos

Update README.md

Add basic error handling

fix

add hbench