add snippet file

Author: spnraju

snippets/nightwatchsnippets.json

@@ -0,0 +1,14 @@
+{
+    "clickWithCallback": {
+        "prefix": "ckc",
+        "body": "click(${1:selector}, ${2:callback})$3",
+        "description": "click(selector,callback)"
+      },
+
+      "click": {
+        "prefix": "ck",
+        "body": "click(${1:selector})$2",
+        "description": "click(selector)"
+      }
+
+}