Update changelog for v2.3 and README's open source pointers (#731)

README.md

@@ -28,7 +28,7 @@ All Python code for the `pynq` package can be found in the `/pynq` folder. This
 To update your PYNQ SD card to the latest ``pynq`` package, you can run the following command from a terminal connected to your board:
 
 ```console
-sudo pip3.6 install --upgrade git+https://github.com/Xilinx/PYNQ.git
+sudo pip3 install --upgrade git+https://github.com/Xilinx/PYNQ.git
 ```
 
 SDK software projects and Python-C source codes are also stored along with the Python source code. After installing the `pynq` package, the compiled target files will be saved automatically into the `pynq` package.
@@ -68,3 +68,9 @@ Please ask questions on the <a href="https://groups.google.com/forum/#!forum/pyn
 **Xilinx Embedded SW** License : [Multiple License File](https://github.com/Xilinx/embeddedsw/blob/master/license.txt)
 
 **Digilent IP** License: [MIT License](https://github.com/Xilinx/PYNQ/blob/master/THIRD_PARTY_LIC)
+
+## SDBuild Open Source Components
+
+**License and Copyrights Info** [TAR/GZIP](https://www.xilinx.com/member/forms/download/xef.html?filename=pynq-v2.3-license.tar.gz)
+
+**Open Components Source Code** [TAR/GZIP](https://www.xilinx.com/member/forms/download/xef.html?filename=pynq-v2.3-open_components.tar.gz)

docs/source/changelog.rst

@@ -2,6 +2,40 @@
 Change Log
 ************************
 
+Version 2.3 
+============================
+
+* Image releases:
+   * pynq_z1_v2.3
+   * pynq_z2_v2.3
+   * zcu104_v2.3  
+
+Documentation updated 7 Sep 2018
+
+* Architecture Additions
+   * Zynq UltraScale+ (ZU+) support added
+* Board Additions
+   * ZCU104 support added
+* Programmable Logic Updates
+   * All bitstreams built using Vivado 2018.2
+   * Initial support for DSA generation and PL parsing added
+   * Removed custom toplevel wrapper file requirement
+* SDBuild Updates
+   * Root filesystem based on Ubuntu 18.04
+   * Boot partition built on Petalinux 2018.2
+   * SDSoC 2018.2 support added
+   * Added fpga_manager support for Zynq and ZU+
+   * AWS Greengrass kernel configuration options added
+   * Custom board support updated
+* New PYNQ Python Modules
+   * Added ZU+ DisplayPort
+   * Added PMBus power monitoring
+   * Added uio support
+   * Added AXI IIC support
+* New Microblaze Programming Notebooks
+   * Added arduino ardumoto, arduino joystick, grove usranger notebooks
+
+
 Version 2.2 
 ============================