Merge pull request #10 from guss77/master

Prevent grandchild from crashing on exception
Use Process::exit! refs \#1
Mention about license in gemspec, refs arya/bluepill#197
Use blue-daemons fork of daemons gem, refs #1
Version bump to 0.0.67
update rspec syntax from should to expect
Merge pull request #11 from adamjonas/master

update rspec syntax from should to expect
Update rspec dependency to >= 3