add/delete user/manager/billing manager/auditor API calls
add/delete user/manager/billing manager/auditor API calls

hpcloud/cloud-foundry-client-js,ActiveState/cloud-foundry-client-js,morikat/cloud-foundry-client-js,morikat/cloud-foundry-client-js,ActiveState/cloud-foundry-client-js,18F/cloud-foundry-client-js,18F/cloud-foundry-client-js,hpcloud/cloud-foundry-client-js