Created fs (markdown)

fs.md

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+Shows disk space usage for a set partition.
+
+Displays a notification when the partition is full or has low space.
+
+    mypartition = lain.widgets.fs()
+
+The function takes a table as optional argument, which can contain:
+
+Variable | Meaning | Type | Default
+--- | --- | --- | ---
+`partition` | Partition to monitor | string | "/"
+`refresh_timeout` | Refresh timeout seconds | int | 600
+`header` | Text to show before value | string | " Hdd "
+`header_color` | Header color | string | `beautiful.fg_normal` or "#FFFFFF"
+`color` | Value color | string | `beautiful.fg_focus` or "#FFFFFF"
+`footer` | Text to show after value | string | "%"
+`shadow` | Hide the widget if `partition` < 90 | boolean | false
+
+**Note**: `footer` color is `color`.
+
+`lain.widgets.fs` outputs the following table:
+
+Variable | Type
+--- | ---
+`widget` | `wibox.widget.textbox`
+`show` | function
+
+You can display a notification of current disk space usage with the following key binding:
+
+    awful.key({ altkey }, "h", function () mypartition.show(7) end),
+
+where ``altkey = "Mod1"`` and ``show`` argument is an optional integer, meaning timeout seconds.