wal: add page (#3381)

pages/common/wal.md

@@ -0,0 +1,28 @@
+# wal
+
+> A tool to create color schemes based on the dominant colors of a wallpaper.
+> More information: <https://github.com/dylanaraps/pywal>.
+
+- Preview color scheme:
+
+`wal --preview {{image.png}}`
+
+- Create color scheme:
+
+`wal -i {{image.png}}`
+
+- Create a light color scheme:
+
+`wal -il {{image.png}}`
+
+- Skip setting the desktop wallpaper:
+
+`wal -in {{image.png}}`
+
+- Skip setting the terminal colors:
+
+`wal -is {{image.png}}`
+
+- Restore the previously generated color scheme and wallpaper:
+
+`wal -R`