returnSlots: returnSlots - a helper function to return slots to place in...
In SPIRBURG-inc/tableONE: Table One Figure Creation

returnSlots - a helper function to return slots to place in the table1

This function returns the slots generated by returnFactorSlots and returnNumSlots

1	returnSlots(eSet, groupChar, group, char, func = NULL)

`eSet`	- the eSet or data.frame sent to table1
`groupChar`	- a factor column present in eSet by which to group samples and summarize char
`group`	- which factor level from groupChar is summarized
`char`	- which characteristic is summarized from eSet
`func`	- a user defined function that will also return a character summary - not really implemented yet