Create .asf.yaml (#2166)

.asf.yaml

@@ -0,0 +1,4 @@
+# Web site staging services:
+
+github:
+  description: "Dolphin Scheduler is a distributed and easy-to-extend visual workflow scheduling platform, dedicated to solving the complex dependencies in data processing, making the scheduling system out of the box for data processing.(分布式易扩展的可视化工作流任务调度)"