Add a few more gitignores
Add a few more gitignores

reflex-frp/reflex-platform,ajnsit/reflex-platform,meiersi/try-blaze-react,jhegedus42/try-reflex,ocharles/try-reflex,reflex-frp/reflex-platform,paldepind/try-reflex,ryantrinkle/try-reflex,reflex-frp/reflex-platform,unisonweb/unison-dependencies