Update README.md

Author: shady831213

graph/README.md

@@ -166,3 +166,13 @@
  [Code](https://github.com/shady831213/algorithms/blob/master/graph/apsp.go)
 
    [Test](https://github.com/shady831213/algorithms/blob/master/graph/apsp_test.go)
+ 
+# Max Flow
+ --------------
+ 
+ CLRS Sec26
+  
+ --------------
+ [Code](https://github.com/shady831213/algorithms/blob/master/graph/flowGraph.go)
+ 
+   [Test](https://github.com/shady831213/algorithms/blob/master/graph/flowGraph_test.go)