added bitcoin project to github
upped the java version
Public key to address conversion in Bitcoin.java
Base58 conversion and transaction hashing.
Signering ferdig men må testes.
added bouncycastle to gradle and fixed imports
added gson dependency to gradle
New class BitCoupon
Bitcoupon generateCreationTransaction
created the external interface for jar, and for android, and implemented json/gson translation
typo
fixed a merge conflic, and changed list dependencies to be list and not arraylist
Subtype removed
removed unused method
removed leftover argument in bitcoupon
Changed creatorPublicKey to creatorAddress
Subtype rmoved from coupontype argument
refactored main into a more suitable method
Merge branch 'BitCoin' of https://github.com/Habitats/bitcoupon into BitCoin
transaction (+transaction list)  to and from json works now