Merge pull request #12 from CoreyTrombley/master

Fix for Issue number 7
Version bump.
Fix bugs from out of date codes comparing with Stamp API
update with changed 2012 to fix bugs and add new fields
Merge pull request #14 from scrum2b/master

Merge codes from changes in 2012 (IntegratorTxID, TransactionID, PostageBalance)
Refer to the gemspec for gem specifications.
Version bump.
Merging latest from matt sears
Using SSL version 3 in soap requests