added spec_image, spec_hist, spec_boxplot and fixed some cran comments
diff --git a/DESCRIPTION b/DESCRIPTION
index ba3c629..6ff2b6f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -46,7 +46,8 @@
     glue,
     tools,
     webshot,
-    digest
+    digest,
+    graphics
 Suggests:
     testthat,
     magick,