Add convenience bindings for ggplot2 and plotly with hyperlinks

These functions will probably be moved to a separate package.

Change-Id: Iaecd23b1401bc5df7ee4a904dca2e87466266143
diff --git a/NAMESPACE b/NAMESPACE
index 0e11e6f..4ba2e60 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -8,6 +8,7 @@
 export(complete)
 export(expand_grid)
 export(geom_freq_by_year_ci)
+export(ggplotly)
 export(group_by)
 export(ipm)
 export(mutate)
@@ -44,15 +45,23 @@
 importFrom(dplyr,select)
 importFrom(dplyr,starts_with)
 importFrom(dplyr,summarise)
+importFrom(ggplot2,GeomPoint)
+importFrom(ggplot2,aes)
 importFrom(ggplot2,element_text)
 importFrom(ggplot2,geom_line)
 importFrom(ggplot2,geom_point)
 importFrom(ggplot2,geom_ribbon)
+importFrom(ggplot2,ggplot)
+importFrom(ggplot2,ggproto)
+importFrom(ggplot2,layer)
 importFrom(ggplot2,scale_x_continuous)
 importFrom(ggplot2,theme)
+importFrom(htmlwidgets,onRender)
+importFrom(htmlwidgets,saveWidget)
 importFrom(jsonlite,fromJSON)
 importFrom(lubridate,year)
 importFrom(magrittr,"%>%")
+importFrom(plotly,ggplotly)
 importFrom(purrr,map_dfr)
 importFrom(stats,prop.test)
 importFrom(tibble,as_tibble)