added strLength validators because Length is not defined for String in scalaz
Use E as a type parameter instead of F

 * More consistant with scalaz type parameter names
 * avoid confusing varial name f which is normally used to denote a function type
Merge pull request #9 from OleTraveler/string-length

String length
use scalaz-specs2
bump to Scala 2.10.0 final and scalaz 7.0.0-M7
draft for a Validation DSL
andAlso/andWith for Checker

With that, Checker might be an Applicative, but I'm not yet convinced of that.
Its laws will have to be checked (no pun intended).
tuned
check laws for Checker
scala210: simpler structure
Import dispatch instances

travisbrown/instancez@982f23dddd
dispatch: generalize to arbitrary executors
Merge branch 'topic/checker'
use scalaz-specs2
update README
add new submodules to aggregate
prepare release: include sbt-release and sbt-pgp
README for undo
add Sonatype releases
Setting version to 0.1