Use explicit namespace for utils::packageVersion

Author: wch

DESCRIPTION

@@ -14,5 +14,6 @@ Depends:
     R (>= 3.0)
 License: GPL-2 | file LICENSE
 Imports:
+    utils,
     shiny (>= 0.11.1),
     htmltools (>= 0.2.6)

R/deps.R

@@ -26,7 +26,7 @@ addDeps <- function(x) {
       stylesheet = adminLTE_css
     ),
     htmlDependency("shinydashboard",
-      as.character(packageVersion("shinydashboard")),
+      as.character(utils::packageVersion("shinydashboard")),
       c(file = system.file(package = "shinydashboard")),
       script = "shinydashboard.js",
       stylesheet = "shinydashboard.css"