Update and extend README.md

README.md

@@ -1,11 +1,33 @@
 # lxqt-notificationd
 
-The LXQt Notification daemon
+## Overview
 
-## Spec
+`lxqt-notificationd` is LXQt's implementation of a daemon according to the [Desktop Notifications Specification](https://developer.gnome.org/notification-spec/).
 
-lxqt-notificationd follows the Desktop Notifications Specification version 1.2.
+This specification defines a way to display notifications in pop-up windows on desktops. Notifications like this are e. g. frequently used by chat or mail clients to inform about incoming messages, by media players to indicate the beginning of another track but also by the desktop environment itself to indicate volume changes or similar.
 
-It can be found here:
+lxqt-notificationd is comprising binaries `lxqt-notificationd` and `lxqt-config-notificationd`.   
+`lxqt-notificationd` is running in a daemon-like manner as so-called [LXQt Module](https://github.com/lxde/lxqt-session#lxqt-modules) and doing the actual work. GUI "Desktop Notifications", binary `lxqt-config-notificationd`, is used to customize the notifications.   
 
-* https://people.gnome.org/~mccann/docs/notification-spec/notification-spec-latest.html
+lxqt-notificationd is implementing version 1.2 of the said specification.   
+
+## Installation
+
+### Compiling source code
+
+Runtime dependencies are KWindowSystem, [liblxqt](https://github.com/lxde/liblxqt) and [lxqt-common](https://github.com/lxde/lxqt-common).   
+Additional build dependencies are CMake and optionally Git to pull latest VCS checkouts. The localization files were outsourced to repository [lxqt-l10n](https://github.com/lxde/lxqt-l10n) so the corresponding dependencies are needed, too. Please refer to this repository's `README.md` for further information.   
+
+Code configuration is handled by CMake. CMake variable `CMAKE_INSTALL_PREFIX` has to be set to `/usr` on most operating systems.   
+
+To build run `make`, to install `make install` which accepts variable `DESTDIR` as usual.   
+
+### Binary packages
+
+Official binary packages are provided by all major Linux distributions like Arch Linux, Debian (as of Debian stretch only), Fedora and openSUSE. Just use your package manager to search for string `lxqt-notificationd`.
+
+## Configuration, Usage
+
+As `lxqt-notificationd` is run as LXQt Module it can be adjusted from section "Basic Settings" in configuration dialogue [LXQt Session Settings](https://github.com/lxde/lxqt-session#lxqt-session-settings) of [lxqt-session](https://github.com/lxde/lxqt-session).   
+
+Configuration dialogue "Desktop Notifications" (binary `lxqt-config-notificationd`) which is used to customize notifications can be opened from the panel's main menu - Preferences - LXQt Settings - Desktop Notifications and is provided by the [Configuration Center](https://github.com/lxde/lxqt-config#configuration-center) of [lxqt-config](https://github.com/lxde/lxqt-config) as well.