init version with knockout.js
more knockout todos
ko: formatting times, grand total
ko: started making InputTime a class
ko: fixed time precision; removed code
broke out utility module
ko: inputtime object, not quite working yet
ko: added event handling for cells
ko: fixed bug with updating totals, validation on rows, comments, cleanup
ko: comments
ko: bug fix for _raw
ko: some cleanup per @nezda's input
Update README.md
set input's _raw value to notify always per @nezda
moved init inside class via callback, per @adamstrickland
removed unneeded test dependency on timecalc
updated comment on _raw