adding connection-close header to minimize the chance of a 403
merging pull request 5 to fix a typo in payPalOrderComplete and adding
unit test
adding recycling creditLitleTxnId to void response
making the version sent up in the litleOnlineRequest match the
major.minor version of the sdk.  It should not use the version from the
config.
Merge branch 'master' of https://github.com/LitleCo/litle-sdk-for-ruby.git
Merge branch 'master' of https://github.com/LitleCo/litle-sdk-for-ruby.git
Merged pull request #7 and added unit tests for it - adds external
logging support