Merge pull request #26 from vasujain/master

SDK Integration for Non Maven Users
Add doc for future payment and invoicing samples
bump core version
remove unnecessary code
line.separator change for Java 6 compatibility
Bump up core version
Update README
Merge branch 'rel-0.9.1' into stable
Merge branch 'stable'
Add existing issues message
Add pointer to Android SDK for clarification
Update recipent emails
Merge pull request #30 from avidas/update_dl

Update recipent emails
Let SDK pick up latest core
Merge branch 'pom_update' into stable
Merge branch 'stable'
added invoiceNumber, custom and softDescriptor to Transaction
Merge pull request #34 from nhammond101/transaction-updates

added invoiceNumber, custom and softDescriptor to Transaction
Modified field percentage to be instance of Float instead of primitive type float. Remote PayPal API server was not allowing line discounts when an Amount discount was being applied to invoices due to Gson forcing the definition of Percentage due to primitive type.
Merge pull request #36 from rrolfeRKPE/master

Modified Cost.Percentage field type to Float