Add UnicodePlots image to README

Author: pjaap

README.md

@@ -135,18 +135,18 @@ and all plotting functions will do nothing.
 |                | PyPlot/PythonPlot  | Makie | PlutoVista | Plots | VTKView | UnicodePlots |
 |----------------|--------------------|-------|------------|-------|---------|--------------|
 | scalarplot, 1D | y                  | y     | y,i        | y     | y       | y            |
-| vectorplot, 1D | y                  | y     | y          | y     | y       |              |
+| vectorplot, 1D | y                  | y     | y          | y     | y       | n            |
 | gridplot, 1D   | y                  | y     | y          | y     |         | y            |
 | scalarplot, 2D | y                  | y     | y          | (y)   | y,i     | y            |
-| vectorplot, 2D | y                  | y     | y          | y     |         |
-| streamplot, 2D | y                  | y     | p          | n     |         |
+| vectorplot, 2D | y                  | y     | y          | y     |         | y
+| streamplot, 2D | y                  | y     | p          | n     |         | n
 | gridplot, 2D   | y                  | y,i   | y          | (y)   | y,i     | y            |
-| scalarplot, 3D | y                  | y,i   | y,i        | n     | y,i     |              |
-| gridplot, 3D   | y                  | y,i   | y,i        | n     | y,i     |              |
-| vectorplot, 3D | p                  | p     | p          | n     |         |              |
-| streamplot, 3D |                    | p     | p          | n     |         |              |
-| movie          | n                  | y     | n          | y     |         |              |
-| triangulateio  | y                  | y     | n          | n     | n       |              |
+| scalarplot, 3D | y                  | y,i   | y,i        | n     | y,i     | n            |
+| gridplot, 3D   | y                  | y,i   | y,i        | n     | y,i     | n            |
+| vectorplot, 3D | p                  | p     | p          | n     |         | n            |
+| streamplot, 3D |                    | p     | p          | n     |         | n            |
+| movie          | n                  | y     | n          | y     |         | n            |
+| triangulateio  | y                  | y     | n          | n     | n       | n            |
 
 ## Sample output
 
@@ -166,6 +166,10 @@ and all plotting functions will do nothing.
 ### [VTKView](https://github.com/j-fu/VTKView.jl) (experimental):
 ![](https://github.com/WIAS-PDELib/GridVisualize.jl/blob/main/docs/src/assets/multiscene_vtkview.png?raw=true")
 
+### [UnicodePlots](https://github.com/JuliaPlots/UnicodePlots.jl) (experimental):
+![](https://github.com/WIAS-PDELib/GridVisualize.jl/blob/main/docs/src/assets/multiscene_unicodeplots.png?raw=true")
+
+
 ## vscode
 Plotting  into the plot pane of Visual Studio Code is working. Here, you can use CairoMakie or WGLMakie as backend. This works only with the mutating functions, i.e. you should use something like
 ```