Fixed small bug in example.

After you invalidate a card the 'is_valid' attribute is gone. Testing whether it is True fails as a result.
Merge pull request #69 from julianpistorius/patch-1

Fixed small bug in example.
Quote only string params
Add delimiters in payload expand
Updated scenarios
Update scenario cache
initial commit. kinda, sorta works
pep8
add appears_on_statement_as to credits
Merge pull request #73 from rserna2010/appears_on_statement_as

add appears_on_statement_as to credits
Bump to version 0.11.15
got a simple example working, filled in transaction methods, filled in funding instrument methods
remove old scenarios
more robust link parsing, get events working (with a small hack)
more examples, fix error mapping
suite tests
tests find bugs, yay
for python 2.6
for python 2.6
docs