Create index.md in graph code

graph/index.md

@@ -0,0 +1,23 @@
+---
+publish: true
+permalink: graph
+title: Graph Algos
+code:
+  - graph
+
+---
+{% include_relative README.md %}
+# Code
+
+{% for x in page.code %}
+```cpp
+{% include_relative {{ x }}.cpp %}
+```
+{% endfor %}
+
+{% for x in page.usage %}
+{% if forloop.first %}
+# Usage
+{% endif %}
+ - [Usage {{ forloop.index }}]({{x}})
+{% endfor %}