http2/http2-spec — pull request #379 by dcsommer (2014-02-07 19:38:55+00:00)
Title: Small clarification on what kind of extension

This is a really minor thing, but as I was reading the spec, I was wondering for a bit what "extensions" meant (user defined? something else?). I think the intent is to reference extensions defined by future RFCs that revise HTTP/2 protocol.