Update README.md

Author: normanrz

README.md

@@ -1,10 +1,8 @@
-## Early preview of `zarr-java`
+# Early preview of `zarr-java`
 
 This repository contains an early preview of a Java implementation of the Zarr specification. 
-It is intended for collecting feedback from the community and not for use. 
+It is intended for collecting feedback from the community and not for use. The API is subject to changes.
 
-# zarr-java
-Java implementation of the Zarr Specification
 
 ## Usage
 ```java
@@ -38,4 +36,4 @@ array.write(
     new long[]{0, 0, 0, 0}, 
     ucar.ma2.Array.factory(ucar.ma2.DataType.UINT, new int[]{1, 1024, 1024, 1024})
 );
-```
+```