Update README move and update presentations
Merge branch 'master' into spec-output
Fix travis exclude for self mutation
Adjust flog score
Add donations section to README
Remove nil => Object.new mutation

Mutation operators should *always* mutate to a less powerfull structure
/ less complex semantics. To force tests to prove complex semantics are
needed. The mutation removed with that commit violates that principle.
Prepare version 0.5.12
Adjust flay score
Merge branch 'master' into spec-output

Conflicts:
	config/flay.yml