'Buckaroo Gateway' does not appear as supported when choosing a type

[silvano-a]

as seen in #21 discussion
it seems that Buckaroo_Gateway does not always show up as supported in the error message

[silvano-a]

@yasasn86 which release are you using? 2.1?

[yasasn86]

yes, I am using 2.1

[silvano-a]

This is most likely caused by the prefix 'Buckaroo' in the gateway class/file name