Fixed issues with assertions about ftype and rad. Code is now more general and allows for remote and local fetching of .map or .mapex files. Also updated documentation and implemented __name__==__main__ testing.
Changed fetchUtils methods to be even more general. Removed rad, ftype, and channel arguments. Replaced them with remotedict and localdict. Also updated documentation.
Updated some more documentation, removed unnecessary code regarding fnamefmt.
Merge pull request #54 from vtsuperdarn/fix_fetchUtils_Restrictive_Asserts

Fixed issues with assertions about ftype and rad.
looks good. main tests are pulling fitacf and mapex for me from vt. Pulling the trigger on the merge now.