display prompt when fetching coupon by id
Adds class diagram for bitcoin library.
Adds sequence diagrams for bitcoin related tasks.
Modifies sequence diagram for mobile client - send coupon
Moved socket_example into folder
Minimal CLI example
Add transactions to db
Remove unneccassry .keep files
Changes most migrations
gitignore
Update of admin client sequence diagram for create coupon.
Updates the sequence diagrams.
Creates transactions_controller in backend
Adds admin client send transaction sequence diagram.
Update to bitcoin class diagram
Changed some method and variable names.
Fixes incomplete names in sequence diagrams.
Adds admin client list coupons sequence diagram.