improvement for forecasting resistance

DESCRIPTION

@@ -1,5 +1,5 @@
 Package: AMR
-Version: 0.2.0.9016
+Version: 0.2.0.9017
 Date: 2018-07-25
 Title: Antimicrobial Resistance Analysis
 Authors@R: c(
@@ -43,7 +43,8 @@ Suggests:
     covr (>= 3.0.1),
     rmarkdown,
     rstudioapi,
-    tidyr
+    tidyr,
+    ggplot2
 LinkingTo: Rcpp
 VignetteBuilder: knitr
 URL: https://github.com/msberends/AMR