Merge pull request #15 from kmizu/request/update-version

Update version number
Merge pull request #16 from xuwei-k/update

update lift-json and specs2
unidoc
Merge pull request #18 from xuwei-k/unidoc

unidoc
Update README.md to include link to 0.6.0 scaladoc
Merge pull request #19 from kmizu/request/update-README-scaladoc

Update README.md to include link to 0.6.0 scaladoc
scalacOptions implicitConversions
implicit def toJsonArray
Merge pull request #20 from xuwei-k/implicitConversions-option

scalacOptions implicitConversions
Merge pull request #21 from xuwei-k/toJsonArray

implicit def toJsonArray
Verion up
Merge pull request #22 from kmizu/request/version-up

Verion up (0.7.0-SNAPSHOT --> 0.8.0)
Update README.md for 0.8.0
Merge pull request #24 from kmizu/request/update-README-for-080

Update README.md for 0.8.0
0.9.0-SNAPSHOT
exclude specs2 from lift-json.
this is lift-json bug
https://twitter.com/kxbmap/status/296182772010201088
https://twitter.com/xuwei_k/status/296185360977895425
https://twitter.com/xuwei_k/status/296186652966154240
Merge pull request #26 from xuwei-k/exclude-specs2

exclude specs2 from lift-json
travis
scala, json4s, lift-json version