Add jquery leanmodal
Remove js/ folder
Replace SheetSync with GridHub
Merge pull request #79 from johnheroy/master

Add jquery leanmodal, remove js folder, replace sheetsync with gridhub
Revise file structure for README
Restyle bottom tabs
Merge pull request #81 from johnheroy/master

Revise file structure for README
basic cellRenderer
workbook refactor basic cell styles
Workbook input API finalized