changed all noaa* file names to ncdc, will change function names next, #49
changed all noaa* fxns to ncdcc*, #49
updated ncdc vignettes, fixed fxn name calls in vignettes, #49
changed all noaa_buoy* fxns to buoy*, #49
updated buoy vignette with new fxn names, #49
changed noaa_swdi to swdi, updated vignette accordingly #49
changed noaa_seaice fxn to seaice, updated seaice vignette #49
deleted files generated in vignette seaice
updated vignettes in /vignettes dir
removed old vigns from vignettes/