Created task (markdown)

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+[<- widgets](https://github.com/copycat-killer/lain/wiki/Widgets)
+
+Attaches a [taskwarrior](http://taskwarrior.org/projects/show/taskwarrior) notification to a widget, and lets to add/search tasks from the promptbox.
+
+    lain.widgets.contrib.task:attach(widget, args)
+
+`args` is an optional table which can contain:
+
+Variable | Meaning | Type | Default
+--- | --- | --- | ---
+`font_size` | Calendar font size | int | 12
+`fg` | Calendar foreground color | string | `beautiful.fg_normal`
+`bg` | Calendar background color | string | `beautiful.bg_normal`
+`position` | Calendar position | string | "top_right"
+`timeout` | Notification timeout seconds | int | 7
+
+`position` possible values are defined [here](http://awesome.naquadah.org/doc/api/modules/naughty.html#notify).
+
+Notification will show the output of `task` command.
+
+You can call the notification with a key binding like this:
+
+    awful.key({ modkey, altkey }, "t", lain.widgets.task.show),
+
+where ``altkey = "Mod1"``.
+
+And you can prompt to add/search a task with key bindings like these:
+
+    awful.key({ modkey,         }, "t", lain.widgets.contrib.task.prompt_add),
+    awful.key({ modkey, "Shift" }, "t", lain.widgets.contrib.task.prompt_search),
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