Add CppCon 2019 talk to videos page. [skip ci]
@@ -4,6 +4,9 @@ short-description: Videos about Meson
# Videos
+ - [Behind the Scenes of a C++ Build
+ System](https://www.youtube.com/watch?v=34KzT2yvQuM) CppCon 2019
+
- [Compiling Multi-Million Line C++ Code Bases Effortlessly with the
Meson Build system](https://www.youtube.com/watch?v=SCZLnopmYBM),
CppCon 2018
