Initial support for receipts Issue #427
remove unused variable
Merge branch 'receipts' of git://github.com/nickdesaulniers/r2d2b2g into nickdesaulniers-receipts
fixed some of the smaller nits
reworked receipt installs
reference receipt instead of receipts
added simple UI and default to no receipt
Merge branch 'receipts' of git://github.com/nickdesaulniers/r2d2b2g into nickdesaulniers-receipts
Merge branch 'master' into nickdesaulniers-receipts
fixed smaller nits in receipts code
track receipt type in app registry for re-retrieval
fail loudly for failed receipts
Merge branch 'master' into nickdesaulniers-receipts
Merge branch 'receipts' of git://github.com/nickdesaulniers/r2d2b2g into nickdesaulniers-receipts
fix spelling nit