Change descrption: this fork is plainly not 100% FOSS

[julianfoad]

Project description still says "100% FOSS" which is plainly not true of this fork, given that it includes google's proprietary swipe lib.

Should say something like "Partly proprietary, partly FOSS keyboard" or your alternative choice of wording.

Probably needs updating in more than one place -- e.g. github description, readme, internal about page, etc. Haven't checked exactly where.