Add a line to README giving a little more detail about what this does.
The README tells me that this makes it easier to develop GtkSourceView based editors, but doesn't tell me what areas are improved or how.
Having a couple of extra lines would be really handy.
I've got an idea of what a pain it can be building editors in GtkSourceView can be, so would be good to know what this makes / will make easier.
Thanks :)