Merge pull request #617 from a0viedo/master

removed extra double quote from README
Delete all watchers on kill
(watch) better debug logs
(watch) improved tests
Attempt to fix #613
catch error on udp send data
Reverse interactor fix reverse_interact flag
avoid action duplicate
Merge branch 'master' of github.com:Unitech/pm2
Merge pull request #621 from soyuka/ghost-processes

Attempt to fix #613
add programmatic examples - fixes
Fix #622

Happy (:?
#622 informations about `npm install`
Fix typos
Merge pull request #625 from fixe/patch-1

Fix typos in README.md
memory leak fix
Fix cwd
Clean - add environment merge
Fix callback
serialize data