[moserial] Update README.

[Michael J. Chudobiak <mjc src gnome org>]

commit f5bbbd7d61897ba1258ff924fbb15bcd26596053
Author: Mictronics <github mictronics de>
Date:   Sun Apr 26 20:05:26 2020 +0200

    Update README.

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+# moserial
+
+moserial is a clean, friendly gtk-based serial terminal for the gnome desktop. It is written in 
[Vala](https://wiki.gnome.org/Vala).
+
+## Features
+
+- ASCII and HEX views of incoming and outgoing data
+- Logging to file of incoming and/or outgoing data
+- Support for x, y, and z-modem file send and receive
+- Support for profile files, to load/save common configurations
+- Easier to use than the alternatives
+- Supports i18n
+- It even has docs! 
+
+For more information see [GNOME wiki](https://wiki.gnome.org/Apps/Moserial).
+
+## Build
+
+### Dependencies
+
+Install the following build dependencies:
+
+`sudo apt-get install libglib2.0-dev yelp-tools graphviz-dev libgtk-3-dev`
+
+At least libgtk v3.20 is required.
+
+Get the Vala compiler from [here](https://download.gnome.org/sources/vala/)
+Required version v0.48.5 or later.
+
+Extract files to folder then run inside that folder:
+```
+./configure
+make
+sudo make install
+```
+
+### Manually build
+
+```
+git clone https://github.com/Mictronics/moserial
+cd moserial/
+```
+On 32 bit systems:
+```
+./autogen.sh --prefix=/usr 
+make
+```
+On 64 bit systems:
+```
+./autogen.sh --prefix=/usr --libdir '/usr/lib64' --build x86_64 
+make
+```
+Optional:
+`sudo make install`
+
+### Build issues
+
+A. If you see this error:
+   src/SerialConnection.c:31:21: fatal error: stropts.h: No such file or directory
+
+   then either:
+
+   1. sudo touch /usr/include/stropts.h
+
+   or
+
+   2. patch your posix.vapi file as described at
+   http://bugzilla.gnome.org/show_bug.cgi?id=656690#c3
+
+B. moserial does not implement the xmodem, ymodem, or zmodem protocols
+   directly. It relies on the standard rz and sz utilities to send and
+   receive data. These utilities, part of the lrzsz package, must be
+   installed on your system.