README: add links

README.md

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 Distributed database benchmark tester: etcd, Zookeeper, Consul, zetcd, cetcd
 
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+<br><br><hr>
+##### Performance Analysis
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+- Latest test results can be found at https://github.com/coreos/dbtester/tree/master/test-results
+- Exploring Performance of etcd, Zookeeper and Consul Consistent Key-value Datastores (February 17, 2017)
+  - https://coreos.com/blog/performance-of-etcd.html
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+
+<br><br><hr>
+##### Project
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 ![dbtester system architecture](./dbtester.png)
 
 - Database Agent
@@ -22,7 +34,6 @@ For etcd, we recommend [etcd benchmark tool](https://github.com/coreos/etcd/tree
 All logs and results can be found at https://github.com/coreos/dbtester/tree/master/test-results or https://console.cloud.google.com/storage/browser/dbtester-results/?authuser=0&project=etcd-development.
 
 
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 <br><br><hr>
 ##### Noticeable Warnings: Zookeeper