Merge pull request #16 from ldecicco-USGS/master

Final naming convention change.
Merge pull request #17 from ldecicco-USGS/master

Cleaned up readme file.
Merge pull request #18 from ldecicco-USGS/master

Handling multiple date types.
Merge pull request #19 from ldecicco-USGS/master

Added getUserInfo function.
Merge pull request #20 from ldecicco-USGS/master

Fixed bug that caused headache in functions.
Merge pull request #21 from ldecicco-USGS/master

Added time zone stuff to NWIS qw.
Merge pull request #22 from ldecicco-USGS/master

Updated readme.
Update README.md
Note for future work...
Changed to mapper format.
Edited help file example.
Merge branch 'master' of github.com:USGS-R/dataRetrieval
Updated vignette.