Add example bucket policy

docs/sdks/js/example-bucket-policy.js

@@ -0,0 +1,62 @@
+'use strict'
+
+var AWS = require('aws-sdk');
+
+var config = {
+  accessKeyId: "MINIO_ACCESS_ID",
+  secretAccessKey: "MINIO_SECRET_ID",
+  endpoint: "localhost:9000",
+  region: "",
+  sslEnabled: false,
+  s3ForcePathStyle: true
+};
+
+AWS.config.update(config);
+
+var s3 = new AWS.S3();
+
+var statement = {
+  Sid: "ExampleStatemenent1",
+  Effect: "Allow",
+  Principal: {
+    AWS: "minio::Account-Id:user/Dave"
+  },
+  Action: [
+    "s3.ListBucket",
+    "s3.GetObject",
+    "s3.PutObject",
+  ],
+  Resource: [
+    "minio:::examplebucket"
+  ]
+}
+
+var policy = {
+  Version: "2012-10-20",
+  Statement: [statement],
+}
+
+var params = {
+  Bucket: 'new-bucket',
+  Policy: JSON.stringify(policy),
+}
+
+s3.putBucketPolicy(params, function(err, data) {
+  if (err) {
+    console.log(err);
+  } else {
+    console.log(data);
+  }
+});
+
+var params = {
+  Bucket: 'new-bucket'
+};
+
+s3.getBucketPolicy(params, function(err, data) {
+  if (err) {
+    console.log(err);
+  } else {
+    console.log(data);
+  }
+});