Added libgtk-3-dev to apt-get command

vaughnbetz · web-flow · commit 25e5df9bac99 · 2019-10-18T19:40:07.000-04:00
diff --git a/BUILDING.md b/BUILDING.md
@@ -66,6 +66,7 @@ apt-get install \
 	libfontconfig1-dev \
 	libx11-dev \
 	libxft-dev \
+	libgtk-3-dev \
 	perl \
 	liblist-moreutils-perl \
 	python \
