use the s2 macro to specify the test and get nicely formatted output
Merge branch 'master' of github.com:argonaut-io/argonaut
replace bespoke collection EncodeJson and DecodeJson instances with ones derived via the collection `Builder` and `IsTraversableOnce` machinery
fixed name of the DecodeJson instance for collections
Merge branch 'master' of github.com:argonaut-io/argonaut

Conflicts:
	src/test/scala/argonaut/JsonSpecification.scala
Merge pull request #123 from jedws/master

Replace bespoke EncodeJson/DecodeJson instances for collections with derived ones