Improved error msgs
Improved conditionalFormatting fn
read.xlsx bug fix
Documentation
Documentation
Extra worksheet in readTest.xlsx
Example fix
Example fix
Merge branch 'master' of https://github.com/awalker89/openxlsx

Conflicts:
	R/wrappers.R
hyperlink invalid XML characters fix
hyperlinks fix
tidying code
Generalised date formatting
Updated NEWS
readWorkbook Warning Fix
Hyperlinks fix
convertToDateTime function to convert excel to R
show style fix
export convertToDate
POSIX writing functionality