Fix stacked bars example and ggsave commands in Readme.md

Change-Id: Ia37a93a7a29c2f41f15fa9c7f6a7da5073825f61
diff --git a/Readme.md b/Readme.md
index b65da0c..4dabed6 100644
--- a/Readme.md
+++ b/Readme.md
@@ -96,7 +96,7 @@
 #  theme(axis.text.x = element_text(angle = 45, hjust = 1)) +
   theme_ids() +
   scale_fill_ids()
-ggsave("./man/figures/stacked_bars.png", p, width = 70 * .pt, height = 40 *.pt, units = "mm", dpi = 600)
+ggsave("./man/figures/stacked_bars.png", width = 70 * .pt, height = 40 *.pt, units = "mm", dpi = 600)
 ```
 ![](./man/figures/stacked_bars.png)<!-- -->
 
@@ -117,7 +117,7 @@
 #  theme(axis.text.x = element_text(angle = 45, hjust = 1)) +
   theme_ids() +
   scale_fill_ids()
-ggsave("./man/figures/grouped_bars.png", p, width = 70 * .pt, height = 40 *.pt, units = "mm", dpi = 600)
+ggsave("./man/figures/grouped_bars.png", width = 70 * .pt, height = 40 *.pt, units = "mm", dpi = 600)
 ```
 ![](./man/figures/grouped_bars.png)<!-- -->
 
diff --git a/man/figures/stacked_bars.png b/man/figures/stacked_bars.png
index 53db39c..f55126b 100644
--- a/man/figures/stacked_bars.png
+++ b/man/figures/stacked_bars.png
Binary files differ