Merge pull request #8 from schoeberl/master

Typo in tutorial
add ability to run "sbt scalastyle"
add "sbt test" and "sbt scct:test" code coverage
fix - it is possible the classname does not contain any dat character. That would just blow up on init because of the call to findFirstUserLine() in Node.scala
bump gpg plugin version to 0.8 such that publish-local does not required GPG password (enable mechanical build). Use publish-signed and publish-local-signed when the package must be signed (see https://github.com/sbt/sbt-pgp)
insures the scala version with which chisel is built matches the scala version chisel tutorial is expecting.
Merge pull request #9 from smirolo/master

style and coverage reports
doc: minor fix on node access for testing