load, downscale, transform met functions working

load.cfmet, cfmet.downscale.subdaily, and cf2biocro functions working; refs [RM-2315](https://ebi-forecast.igb.illinois.edu/redmine/issues/2315), RM-2322; see also http://rpubs.com/dlebauer/newmet_tests

I am primarily creating this pull request to alert @djaiswal and @UrsulaRuiz to these changes; these should be pulled to your local directory.

```
git pull origin biocro-module2
#... write code ...
#...commit
git add <somefile>
git commit -m "what I did"
#...push...
git push origin biocro-module2
```