update readme

Author: DanielT

README.md

@@ -7,6 +7,8 @@
 This crate provides functionality to read, modify and write Autosar 4 arxml files,
 both separately and in projects consisting of multiple files.
 
+The crate [autosar-data-abstraction](https://github.com/DanielT/autosar-data-abstraction) provides an abstraction layer on top of this crate.
+
 There is also a Python module which is based on this crate: [autosar-data-py](https://github.com/DanielT/autosar-data-py) [![PyPI version](https://badge.fury.io/py/autosar-data.svg)](https://badge.fury.io/py/autosar-data)
 
 ## Features

autosar-data-specification/src/lib.rs

@@ -4,7 +4,7 @@
 //!
 //! The Autosar data model is originally specified as .xsd files - one for each version of the standard.
 //! All these separate xsd files were parsed into data structures and combined; this crate contains the
-//! combined specification data of all 21 Autosar 4 standard revisions.
+//! combined specification data of all 22 Autosar 4 standard revisions.
 //!
 //! ## Supported standards:
 //!
@@ -31,6 +31,7 @@
 //! | `AUTOSAR_00051.xsd` | AUTOSAR R22-11            |
 //! | `AUTOSAR_00052.xsd` | AUTOSAR R23-11            |
 //! | `AUTOSAR_00053.xsd` | AUTOSAR R24-11            |
+//! | `AUTOSAR_00054.xsd` | AUTOSAR R25-11            |
 //!
 //! ## Using the crate
 //!

autosar-data/src/lib.rs

@@ -12,6 +12,8 @@
 //!  - support for Autosar paths and cross references
 //!  - all operations are thread safe, e.g. it is possible to load mutliple files on separate threads
 //!
+//! The crate `autosar-data-abstraction` provides higher level abstractions on top of this crate, which simplify common tasks.
+//! 
 //! # Examples
 //!
 //! ```no_run