Added section on botfile saving and sharing.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 5c710cde459a61d59dc9d8049a176e3ac89c30d3)
README.md: Added a note about using one-ticker-multple-bots with dump file saving/sharing.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 297298d2fd6b9280f480ba93373c07884fedb16b)
README.md: Standardised all merlin paths to "/path/to/merlin".

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 5c44433f2fa88e473d59ce8a6141333e45fa26f6)