added tests and initial implementationt
polished imlementation using N3Util from N3.js
updated README and commented on use of require("n3/lib/N3Util")
started testing IRIs
updated levelgraph to 0.7.0
Moved from " to '
added support for language tags #11
updated dependencies

failed to update level-test!
[style] move away from comma first
updated last dependencies and added 2 shields to README
Merge pull request #10 from elf-pavlik/issue/datatype

v0.3.0-wip