update doc

Author: chaokunyang

README.md

@@ -97,27 +97,27 @@ Nightly snapshot:
 <dependency>
   <groupId>org.furyio</groupId>
   <artifactId>fury-core</artifactId>
-  <version>0.3.0-SNAPSHOT</version>
+  <version>0.4.0-SNAPSHOT</version>
 </dependency>
 <!-- row/arrow format support -->
 <!-- <dependency>
   <groupId>org.furyio</groupId>
   <artifactId>fury-format</artifactId>
-  <version>0.3.0-SNAPSHOT</version>
+  <version>0.4.0-SNAPSHOT</version>
 </dependency> -->
 ```
 Release version:
 ```xml
 <dependency>
   <groupId>org.furyio</groupId>
   <artifactId>fury-core</artifactId>
-  <version>0.2.1</version>
+  <version>0.3.0</version>
 </dependency>
 <!-- row/arrow format support -->
 <!-- <dependency>
   <groupId>org.furyio</groupId>
   <artifactId>fury-format</artifactId>
-  <version>0.2.1</version>
+  <version>0.3.0</version>
 </dependency> -->
 ```