add configuration.md
add stripe api page link
Empty header to fix general styling issues for protip cards.
Merge pull request #124 from Mileshosky/fix/card-padding

Empty header to fix general styling issues for protip cards.
Merge pull request #123 from sirwolfgang/docs

Docs
add default rake task
comment out broken job tests
add todo notes
atomicly wrap api calls with VCR
filter sensitive data for vhr request, and verify all TRAVIS tests pass
add filtered vcr cassettes to repo
remove extra spec task
add vcr env comments to example
make rake notes friendly