added cell reference output, needer for writers
starting writer for sheets
added basic writer sample
added simple dom
basic content writer
basic process for sheets completed
basic strings process completed
added content and string writer
added sample string
fixed average naming
add addPart function
using own xml dom
added core and extended props
playing around with file writting
all xml included but errors are still inside
added themes and styles
clean up code
writer fixed some parts, now the files can be opened in openoffice, but not in excel
integrated xlsx file compare program
detected error in main.js