added profile service
added billing service
added entitlements v2
fixed class url
added create_account
made call to create_object use named args
fixing account post url
use class url instead of instance url
added delete account
add user, delete user on billing service
params bug fix
url fix
url fix
fixed urls on delete user
rename listUsage to list_usage on entitlementsv2
added get plan
minor bug fix
added method to get payment_data
added list_limits function
added a method to fetch plan data for an account