Create editableCellViewport binding.
Add integration tests.
Reorganize and begin extracting KO dependendies to support vanilla JS use.
Move around files, add more tests.
Add .gitattributes.
Add more tests.
Add more tests and reorganize files.
Rename test files to correspond with source files.
Added missing jquery dependency to package file.
Added Excel-like ctrl+shift navigation and selection.
Merge pull request #6 from espenh/develop

Ctrl+shift navigation and selection
Use -s Browserify option to produce standalone bundle.
Add more tests, make range private member of Selection.