Update versions of scaffolder and locator

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Revert md2man to 1.8.7 compatible version

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Highlight md2man problem in backwards compatibility #4

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Use more secure https for fetching gems

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Don't use installed version of genomer in features

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>