Added download button to README
Added explanation about downloading BoxBilling
If there is more than one param for $di['logger]->info() function, using sprintf
logEvent() method updated
Added DB writer for $di['logger']
Added 'log_to_db' option to config file
Unit tests updated
Integration tests fix
If number of params does not match number of placeholders, LogicException will be thrown
Box_Log tests added
Finish 4.11.13
Calculate item tax according to item quantity
Finish 4.11.14
Unit tests update for tax calculation
Finish 4.11.15
Added quantity for invoice item in 2checkout payment gateway adapted
Finish 4.11.16
Double tax in PayPal bugfix
Finish 4.11.16