Preventing pivotal user admin spoof when other admins are available.
Making sure org membership is uploaded before picking the admin spoof.
Revert "Making sure org membership is uploaded before picking the admin spoof."

This reverts commit 833848c32a894134d5e1f74bc701dcbd549f1840.
Removing parallelize from invitations and org membership as it appears to be broken.
Making commit f3ded6aa9241f95367cd1cbcd9f314bb768f3c03 into a single line.
removing concurrency from readme as it is not being used at the moment.
Merge pull request #21 from jkeiser/issue-20

Issue 20