Merge pull request peter-evans#6 from peter-evans/circleci-build

Add circleci build

Merge pull request peter-evans#5 from peter-evans/update-requirements

Update requirements

Merge pull request peter-evans#4 from peter-evans/update-locust

Update Locust to version 0.9.0

Merge pull request peter-evans#3 from peter-evans/update-locust-docker

Update Locust to version 0.8.1

Update README

Merge pull request peter-evans#1 from peter-evans/slave-count-bug

Slave count bug fix

Corrected markdown