Initial spec for voids
New feature: voided holds aren't visible in the index
adding card_hold json schema
renaming void files to holds in general
New feature: unstored cards are GETable
Wrap object creation.

This change was one way that we weren't in line with the spec.
basic create and capture scenarios
Merge remote-tracking branch 'origin/disputes' into creation
there are a number of issues with ensureing that the data is being posted as some json instead of www-form
Merge remote-tracking branch 'origin/revision1' into voids
Merge pull request #496 from balanced/voids

Initial spec for voids
normalizing json
moving response files into response dir
remove debug and @focus
adding requests json schemas
cleaning schemas
fixing more schemas
starting extracer to generate json for building docs
wip, getting extracer to log requests
Update webhook specs regarding duplicates