It might be necessary to use Mux

README.md

@@ -14,7 +14,7 @@ and the package should be installed.
 To create a gui, use `gui = GUI()`, and to get the GUI graphics use `gui()`. The set! function sets widgets or DOM objects to the gui and add! adds them. The following example produces a hello world gui and serves it with Mux
 
 ```julia
-using LabGUI
+using LabGUI, Mux
 gui = GUI()
 
 set!(gui, Node(:div, "Hello world!"))
@@ -29,7 +29,7 @@ It can now be accessed in a browser at <http://0.0.0.0:8000>.
 The construct macro is a modified version of the @manipulate macro from InteractNext, which permits rearranging the ui as the designer sees fit. Example:
 
 ```julia
-using LabGUI
+using LabGUI, Mux
 gui = GUI()
 
 widgets, ui = @construct for x in 1:10
@@ -69,7 +69,7 @@ The grid is a dom object, so we can use `set!(gui, grid)` to make it the layout
 
 In the file svg_helper.jl one can find some routines used to create SVG graphics with a slightly simpler syntax.
 ```julia
-using LabGUI, InteractNext
+using LabGUI, InteractNext, Mux
 gui = GUI()
 
 widgets, ui = @construct for x in vslider(5:5:100),

REQUIRE

 julia 0.6
 InteractNext
+WebIO
+Mux