Update README for v3.0

Ver 2.9 - Database metadata for local AUR packages. Add --gendb, --no…

…database flags. Add -P AUR patched pkgfile passthrough. Update manpages

Enable terminal progress by default. Add --noprogress and --notify fl…

…ags. Display remaining packages in queue

Bump to 2.6

Bump to v2.5

Ver 2.3 - fixes for virtual and local packages

Ver 2.2 - view web comments, fixes for ABS, curl sanity checks + debu…

…gging, --asdeps + --asexplicit params

Ver 2.1 - fixes for PGP, piping and prompt

v2.0 - Improved AUR4 and split package support