Update build.sbt

version 0.4.4
Update build.sbt

v0.4 of libraries
Adjusting paths for Windows compatibility.

- introducing new variables $packageName$ and $className$ to avoid format specifiers in template files
Normalizing linefeeds.
Correcting to use $packageName$ variable
Merge pull request #2 from rsauer/feature/windows-paths

Adjusting paths for Windows compatibility.
Merge pull request #1 from justjoheinz/master

bumped up versions
Notice to upgrade to latest g8 -- needed for latest template
Upgrade to latest @JSExport mode
Test suite for development mode