readme(changes)

grunt build
1. npm install will create npm_modules directory and fetch the modules. run npm_modules (if not already run)
the following files have been changed so as to replace numeral.js with numbro.js
package.json
src/core.js
src/editor/numericEditor.js
src/editor/numericRendered.js
grunt build will create the handsontable.js in dist folder


when cell is of type 'numeric'
expects the following  cellProperties
    1.formatter
    2.decimalSeparator