Update Alert to 0.9.0, .gitignore, composer.lock

 - Update Alert to v0.9.0 in composer and submodule
 - Update .gitignore to ignore composer data in
   vendor directory
 - Add composer.lock to repo
Merge branch '0.2'

Conflicts:
	composer.lock
Update predis dep version to ~0.8.6
Merge branch 'master' of https://github.com/DaveRandom/Addr