nknighthb is completely right. It is user hostile. It even makes a huge assumption, that clarry is programmer in the first place. With "Patches welcome" you might as well be saying "If you don't like it, spend a year learning [Language] to fix this issue." How is that anything other than user hostile?

If my mom can't open a pdf in pdf.js, I'm not going to tell her "Well mom, patches welcome."