Merge pull request #212 from ldecicco-USGS/master

Additional changes for CRAN

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: EGRET
 Type: Package
-Title: Exploration and Graphics for RivEr Trends (EGRET)
+Title: Exploration and Graphics for RivEr Trends
 Version: 3.0.2
 Authors@R: c( person("Robert", "Hirsch", role = c("aut"),
     email = "[email protected]", 
@@ -13,7 +13,9 @@ Authors@R: c( person("Robert", "Hirsch", role = c("aut"),
     person("Jennifer","Murphy", role = c("ctb")))
 Description: Statistics and graphics for streamflow history,
     water quality trends, and the statistical modeling algorithm: Weighted
-    Regressions on Time, Discharge, and Season (WRTDS).
+    Regressions on Time, Discharge, and Season (WRTDS). The modeling
+    method is introduced and discussed in Hirsch et al. (2010) <doi:10.1111/j.1752-1688.2010.00482.x>,
+    and expanded in Hirsch and De Cicco (2015) <doi:10.3133/tm4A10>.
 License: CC0
 Depends:
     R (>= 3.0)