Improve Readme a bit more

README.md

-*** UNDER CONSTRUCTION ***
+:exclamation: UNDER CONSTRUCTION :exclamation:
 
 This project is a work-in-progress port of the Mate Screensaver.
 
@@ -9,9 +9,9 @@ xfce4-screensaver is a screen saver and locker that aims to have
 simple, sane, secure defaults and be well integrated with the desktop.
 It is designed to support:
 
-    * the ability to lock down configuration settings
-    * translation into many languages
-    * user switching
+ - the ability to lock down configuration settings
+ - translation into many languages
+ - user switching
 
 
 Known Issues
@@ -36,18 +36,15 @@ See the file 'INSTALL'
 How to report bugs
 ==================
 
-Bugs should be reported to the Xfce bug tracking system:
+For the time being, please report bugs here on GitHub:
     https://github.com/bluesabre/xfce4-screensaver/issues
 
 You will need to create an account if you don't have one already.
 
 In the bug report please include information about your system, if possible:
 
-   - What operating system and version
-
-   - What version of xfce4-screensaver
-
-        The output of the "xfce4-screensaver-command --version" command.
+ - What operating system and version
+ - What version of xfce4-screensaver, i.e. the output of the "xfce4-screensaver-command --version" command
 
 If you want to debug your installation you may also be able to get meaningful debug output when starting xfce4-screensaver from the debug script:
 `./src/debug-screensaver.sh`