fix issue due to change in VSO project APIs

WellFormed went to wellFormed with some recent changes. This case-insensitive comparison fixes the issue.
Merge pull request #21 from kevin-david/master

fix default project setting issue caused by change in VSO project APIs
Updated vso-client module to 0.1.12
Added WRAP access token management logic
Mention HUBOT_VSONLINE_USER_IS_SERVICE_ACCOUNT env variable and explain how to use it to run scripts with a service account
Merge branch 'support-service-account' of https://github.com/bfcamara/vso-hubotscripts into support-service-account