removed sbt install from setup for linux, windows; created sbt setup file for windows, linux, and mac.
did not touch the mac install file; thought if this pull request is acceptable, the homebrew and sbt sections could be removed from the mac setup
Also added windows "shell" section.
removed
sbt
install from setup for linux, windows; createdsbt
setup file for windows, linux, and mac. did not touch the mac install file; thought if this pull request is acceptable, the homebrew andsbt
sections could be removed from the mac setup Also added windows "shell" section.