Update README.md (#71)

diff --git a/README.md b/README.md
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+++ b/README.md
@@ -83,13 +83,7 @@
 # Download
 Please head to the [releases page](http://skywalking.apache.org/downloads/) to download a release of Apache SkyWalking.
 
-* 0.1.0 release requires SkyWalking 7
-* 0.2.0+ releases require SkyWalking 8
-
-# Compatible backend
-SkyWalking OAP begins to support LUA agent in 7.0.0 release.
-
-You could choose master branch before the official 7.0.0 release.
+**Require SkyWalking 8 OAP server**
 
 # Set up dev env
 ### Debug Startup