Test & Learn banner

Decided to write an article about Agile methodologies (SCRUM in particular), I needed a banner. What best to represent "Test & Learn" best practices than the 3D printing (hobby for me!)? Not sure the article will be finished/posted one day, but here is the text :).

Minor update: added `underline_percent` parameter to fit your text (once I saw http://www.thingiverse.com/thing:2304789/ remix).