Fix #3 Finished implementing monoGetBioassay() function

FUNCTION
Given a CID, bioassay summary data would be fetched from REST PUBCHEM

OUTPUT FORMAT
list object of standard R

list[[1]]: number: -1 | -2     |      1
list[[2]]: multi : 0  | number | data.frame

number is the input CID
data.frame is bioassay summary data.frame read from csv in the cloud