implemented JSONObject which converts string into JSONObject
test for the model
included xlsm file
not working workspace
working workspace
fixed working with resources. the ".xslm" format was not recognized.
evaluating the formula
tidy up
test for a controller method returning  json string
test for setting values in excel
some other types of cell values covered
now the getOutput works in the controller and the model
tidy up and attempt to update workbook on update on some cells