gatherMultiEICs: Fetch EICs from multiple sample files into one file
In tonedivad/GRMeta: Processing MetX data

Fetch EICs from multiple sample files into one file

1	gatherMultiEICs( matfile, tabeic, root = "./", outfile = NA, ncl = 1, nsplit = 20, serial = TRUE)

`matfile`	Information data frame, columns: Sid, unique sample id, In:input file, Out=where to store
`tabeic`	tabeic data frame, must contain Id, mzmin, mzmax,
`root`	Directory to write down
`outfile`	onot really used
`ncl`	num. of clusters - needs snowfall
`nsplit`	how many to do in the same time
`serial`	useless??