use postgresql database for testing
use :truncation strategy to clean database after tests (request specs wouldn't work correctly with :transaction)
uhm, yeah.
Merge remote-tracking branch 'gh/master'
make development database postgresql as well. transaction strategy for database cleaner works again now
make Node.put test for encoding more predictable with multiple ruby versions
spec for directory traversal protection
fix directory traversal protection for /../../ parts
(passing) spec to prove that I don't understand #12