complete rewrite after a discusion with @mikemeier
fix documentation
fix autoload path
remove useless die
rearange documentation
check the currency too
remove one $, its not a variable variable
make all methods ucfirst and lowercase variables
use the ucfirst methods
do not mix " and '
psr-1 psr-2 fix
restructure the repository, cause its a lib and better testable this way
default assign an array
special signs can contain ,
add phpunit
configure php unit
add a simple unit test for payinit parameter
there is no reason to get the dependecies from outside
there is no web test needed
use the parameter for settlement