Merge pull request #565 from Unitech/development

Small fixes
Add event for further inspection
Merge branch 'master' of github.com:Unitech/pm2
prepare for 0.9.2
release 0.9.2
Interactor enhancements
Mention #88 tip
fix #570
remove one_launch_only (it doesn't really doing anything)
Merge pull request #577 from rlidwka/onela

one_launch_only fix #569
Fixing --run-as-user and --run-as-group when in fork mode
Merge pull request #582 from alanhoff/master

Fixing --run-as-user and --run-as-group when in fork mode

close #562
bump fix
fix interactor
#585
bump
bump
Add support for Gentoo startup script
Update documentation
Merge pull request #587 from joshperry/gentoo-startup

Add support for Gentoo startup script