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Quick follow up to this question -- I also took my best crack at converting Fountain 1.1 into a tmBundle, but am also totally unable to figure it out. I managed to get the tmBundle working properly in TextMate 2 -- all the elements are highlighted as expected. But upon adding the bundle to Textastic, no highlighting at all.

I'm pretty sure I added it correctly, as I can now selected a new (Fountainhead) syntax, but nothing gets highlighted. I'm currently comparing the tmlanguage file you provided up above to the tmlanguage file I generated, but I'm honestly running pretty blind here. Is there anything specific I could provide that might make updating the inbuilt fountain language to 1.1 easier? Thanks a ton for all the work.