update links

Signed-off-by: Wang Xu <[email protected]>

Author: gnawux

README.md

@@ -17,4 +17,7 @@ Performance-wise, **HyperContainer is super light**:
 - **Sub-second Boot**: milliseconds to launch a HyperContainer
 - **Slimmed Footprint**: ~28 MB RAM (512MB on AWS EC2)
 
-Since version 0.8, HyperContainer supports [Kubernetes CRI (Container Runtime Interface)][CRI], and has been integrated with kubernetes frakti.
+Since version 0.8, HyperContainer supports [Kubernetes CRI (Container Runtime Interface)][CRI], and has been integrated with [kubernetes frakti][frakti].
+
+[CRI]:http://blog.kubernetes.io/2016/12/container-runtime-interface-cri-in-kubernetes.html
+[frakti]:https://github.com/kubernetes/frakti