fixed jshint warnings, updated efp library
added higcharts as a library
started on example page with highcharts in slickgrid
started on example page with highcharts in slickgrid
also changed the way getCellRange returns values
Merge branch 'master' of https://github.com/netbrain/spreadsheet-js

Conflicts:
	spreadsheet.core.js
fixed a minor bug where columnIndex functions did
not produce a interchangeable result
Added point update handling in higcharts example
Merge branch 'gh-pages' of https://github.com/netbrain/spreadsheet-js into gh-pages