Big Roxy overhaul. 

Added export tags to functions that were manually added to namespace. Got everything set so we can create NAMESPACE with roxygen (there were some redundant exports in there anyhow). Modified the name of "scale.exp.wind" because of the S3 generic "scale" that tries to take it over. That also used to give some build warnings. I now have both computers on roxy 4.0.1 so documentation is now consistent.