Merge pull request #92 from ldecicco-USGS/master

Upping version.

DESCRIPTION

 Package: dataRetrieval
 Type: Package
 Title: Retrieval Functions for USGS and EPA Hydrologic and Water Quality Data
-Version: 2.1.2
+Version: 2.1.3
 Authors@R: c( person("Robert", "Hirsch", role = c("aut"),
     email = "rhirsch@usgs.gov"),
     person("Laura", "DeCicco", role = c("aut","cre"),