Update readme and install

INSTALL.md

@@ -1,14 +1,18 @@
 # Installing
 
-## Dependencies
+## Mandatory dependencies
 
 - Xlib
 - Xt
 - Motif
-- MWM
 - A C compiler
-- brightnessctl (for xmbrightness)
-- xwallpaper
+
+# Optional dependencies
+
+- MWM (the reccomended window manager for Xmd)
+- xsct (display-temperature)
+- brightnessctl (xmbrightness)
+- xwallpaper (xmd-load-wallpaper)
 
 Installing via APK:
 
@@ -49,9 +53,9 @@ in their respective subdirectories:
 
 ## Glue
 
-Xmd includes some utility scripts to provide a standard interface for things
-like screenshotting. These can be installed using `./install.sh` in the `glue`
-directory.
+Xmd includes some scripts to provide a standard interface for common graphical
+tasks like taking screenshots. These can be installed using `./install.sh` in
+the `glue` directory.
 
 ## Session
 

README.md

@@ -1,5 +1,5 @@
 # Xmd
 
-An X11/Motif desktop environment written in C99.
+An X11/Motif desktop environment written in C99 and POSIX shell.
 
-![Screenshot of the default configuration](assets/screenshot.png)
+![Screenshot of the default configuration](assets/screenshot.png)