Remove examples directory

beamsh is broken and out of date -- we can add it back at some
point, but it should be removed to avoid confusion.

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Merge pull request #15 from bfirsh/remove-examples-directory
Rename beam to libchan everywhere except beamsh

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)