more comments

core.go

@@ -22,7 +22,8 @@ var (
 	intro    = "An unified platform for anti-censorship."
 )
 
-// Version returns V2Ray's version as a string.
+// Version returns V2Ray's version as a string, in the form of "x.y.z" where x, y and z are numbers.
+// ".z" part may be omitted in regular releases.
 func Version() string {
 	return version
 }