Copies the streams data directory to R's temporary directory so the examples in SSNbler do not write to the local library or any other places.
copy_streams_to_temp()
A copy of the Middle Fork streams data residing in R's temporary directory
Copies the Middle Fork data to R's temporary directory
copy_streams_to_temp()
# getwd()
# setwd(tempdir())
# getwd()
# if unix-alike, list temporary directory contents using: system('ls')
# if windows, list temporary directory contents using: shell('dir')