Update and reformat all READMEs#950

Merged

N-Parsons merged 5 commits intoexercism:masterfrom

N-Parsons:reformat-readmes

Oct 25, 2017

Commits on Oct 18, 2017

Move 'Submitting Exercises' to heading level 2
Nathan Parsons
committed

Commits on Oct 21, 2017

Regenerate READMEs using configlet
Nathan Parsons
committed
two-fer: Remove Test-Driven Development section
Nathan Parsons
committed

Commits on Oct 24, 2017

Merge branch 'master' into reformat-readmes
Nathan Parsons
authored

Commits on Oct 25, 2017

Merge branch 'master' into reformat-readmes
Nathan Parsons
authored