Add en/0.6.x.md syntax highlighting

en/06.3.md

@@ -1,7 +1,7 @@
 # 6.3 Session storage
 
 We introduced a simple session manager's working principles in the previous section, and among other things, we defined a session storage interface. In this section, I'm going to show you an example of a memory based session storage engine that implements this interface. You can tailor this to other forms of session storage as well.
-
+```Go
 	package memory
 	
 	import (
@@ -114,16 +114,16 @@ We introduced a simple session manager's working principles in the previous sect
 	    session.Register("memory", pder)
 	}
 
-
+```
 The above example implements a memory based session storage mechanism. It uses its `init()` function to register this storage engine to the session manager. So how do we register this engine from our main program?
-
+```Go
 	import (
 	    "github.com/astaxie/session"
 	    _ "github.com/astaxie/session/providers/memory"
 	)
-
+```
 We use the blank import mechanism (which will invoke the package's `init()` function automatically) to register this engine to a session manager. We then use the following code to initialize the session manager:
-
+```Go
 	var globalSessions *session.Manager
 	
 	// initialize in init() function
@@ -131,7 +131,7 @@ We use the blank import mechanism (which will invoke the package's `init()` func
 	    globalSessions, _ = session.NewManager("memory", "gosessionid", 3600)
 	    go globalSessions.GC()
 	}
-
+```
 ## Links
 
 - [Directory](preface.md)