fixes #31

ddls were put in a set, which made the order of them random. this made the schemas regenerate each time.
Merge branch 'master' of github.com:freekh/play-slick
added typesafe as resolvers
Merge pull request #37 from namtzigla/master

unresolved dep bug
published 0.3.0 on github repo
doc update
new sample : computer-database
Global object to insert data
Nullable columns - scaladoc