Squashed 'third_party/matplotlib-cpp/' content from commit f994996

Change-Id: I2124d6ed85284acca42fc0e90f489f422e6e440a
git-subtree-dir: third_party/matplotlib-cpp
git-subtree-split: f994996e0724f30612154a26cbdc660ad9c51907
diff --git a/examples/minimal.cpp b/examples/minimal.cpp
new file mode 100644
index 0000000..fbe1e1c
--- /dev/null
+++ b/examples/minimal.cpp
@@ -0,0 +1,8 @@
+#include "../matplotlibcpp.h"
+
+namespace plt = matplotlibcpp;
+
+int main() {
+    plt::plot({1,3,2,4});
+    plt::show();
+}