Merge tag 'v1.5.0'

1.5.0

 * Support sl-run spawn on Windows (Sam Roberts)
run: metrics triggers log msg every 15 secs

That wasn't intended, its too noisy.
Merge pull request #89 from strongloop/feature/quiet-pm

run: metrics triggers log msg every 15 secs
v1.5.1
Merge branch 'release/1.5.1' into production