Add demo GUI, README

Author: sco1

Demo/DOMdemoGUI.m

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+classdef DOMdemoGUI < matlab.apps.AppBase
+ 
+    % Properties that correspond to app components
+    properties (Access = public)
+        UIFigure      matlab.ui.Figure           % UI Figure
+        LabelTextArea matlab.ui.control.Label    % Text Area
+        TextArea      matlab.ui.control.TextArea % This is some text.        
+    end
+ 
+    methods (Access = private)
+        % Code that executes after component creation
+        function startupFcn(app)
+        end
+    end
+ 
+    % App initialization and construction
+    methods (Access = private)
+ 
+        % Create UIFigure and components
+        function createComponents(app)
+            % Create UIFigure
+            app.UIFigure = uifigure;
+            app.UIFigure.Position = [100 100 280 102];
+            app.UIFigure.Name = 'UI Figure';
+            setAutoResize(app, app.UIFigure, true)
+ 
+            % Create LabelTextArea
+            app.LabelTextArea = uilabel(app.UIFigure);
+            app.LabelTextArea.HorizontalAlignment = 'right';
+            app.LabelTextArea.Position = [16 73 62 15];
+            app.LabelTextArea.Text = 'Text Area';
+ 
+            % Create TextArea
+            app.TextArea = uitextarea(app.UIFigure);
+            app.TextArea.Position = [116 14 151 60];
+            app.TextArea.Value = {'This is some text.'};
+        end
+    end
+ 
+    methods (Access = public)
+ 
+        % Construct app
+        function app = DOMdemoGUI()
+            % Create and configure components
+            createComponents(app)
+ 
+            % Register the app with App Designer
+            registerApp(app, app.UIFigure)
+ 
+            % Execute the startup function
+            runStartupFcn(app, @startupFcn)
+ 
+            if nargout == 0
+                clear app
+            end
+        end
+ 
+        % Code that executes before app deletion
+        function delete(app)
+            % Delete UIFigure when app is deleted
+            delete(app.UIFigure)
+        end
+    end
+end

README.md

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+# mlapptools
+`mlapptools` is an example set of static MATLAB methods for manipulating the DOM underlying the App Designer UI elements formally introduced in R2016a
+
+For additional information, see Iliya Romm's guest Undocumented Matlab article, [*Customizing uifigures part 2*](http://undocumentedmatlab.com/blog/customizing-uifigures-part-2), published Wednesday, September 7th, 2016
+
+## Methods
+[`textAlign`](#textAlign) - Modify text alignment  
+[`fontWeight`](#fontWeight) - Modify font weight  
+[`fontColor`](#fontColor) - Modify font folor  
+
+<a name="textAlign"></a>
+#### *mlapptools*.**textAlign**(*uielement*, *alignment*)
+##### Description
+Set the horizontal text alignment of the specified UI element, `uielement`, to that specified by the input alignment string, `alignment`. 
+
+Valid alignment strings are:
+  * `'left'` - Left align (default)
+  * `'center'` - Center align
+  * `'right'` - Right align
+  * `'justify'` - Each line has equal width
+  * `'initial'` - Revert to default
+
+##### Examples
+Using the demo GUI generated by `./Demo/DOMdemoGUI.m`
+
+```MATLAB
+myGUI = DOMdemoGUI;
+mlapptools.textAlign(myGUI.TextArea, 'center');
+```
+
+```MATLAB
+myGUI = DOMdemoGUI;
+mlapptools.textAlign(myGUI.TextArea, 'right');
+```
+
+<a name="fontWeight"></a>
+#### *mlapptools*.**fontWeight**(*uielement*, *weight*)
+##### Description
+Set the font weight of the specified UI element, `uielement`, to the input weight string or integer, `weight`.
+
+Valid font weight property values are:
+  * `'normal'` - Normal characters (default)
+  * `'bold'` - Thick characters
+  * `'bolder'` - Thicker characters
+  * `[400, 600, 800]` - Integers mapping to `'normal'`, `'bold'`, and `'bolder'`. Intermediate integers (and floats) are accepted but generally map to these 3 values
+  * `'initial'` - Revert to default
+
+##### Examples
+Using the demo GUI generated by `./Demo/DOMdemoGUI.m`
+
+```MATLAB
+myGUI = DOMdemoGUI;
+mlapptools.fontWeight(myGUI.TextArea, 'bold');
+```
+
+```MATLAB
+myGUI = DOMdemoGUI;
+mlapptools.fontWeight(myGUI.TextArea, 600);
+```
+
+<a name="fontColor"></a>
+#### *mlapptools*.**fontColor**(*uielement*, *newcolor*)
+##### Description
+Set the font color of the specified UI element, `'uielement'`, to the input color, `newcolor`. `newcolor` can be a predefined color string or a string containing a valid CSS color method call.
+
+Valid color specifications are:
+  * Hexadecimal colors - e.g. `'#ff0000'` for red
+  * RGB colors - e.g. `'rgb(255,165,0)'` for orange
+  * RGBA colors - e.g. `'rgba(255,255,0,0.3)'` for yellow
+  * HSL colors - e.g. `'hsl(120, 100%, 50%)'` for green
+  * HSLA colors - e.g. `'hsla(240,100%,50%, 1.0)'` for blue
+  * Predefined color names - e.g. `'red'`, `'orange'`, `'yellow'`, `'green'`, `'blue'`, `'indigo'`, `'violet'`. For more colors, see the predefined color names [CSS color specification](https://www.w3.org/TR/css3-color/).
+
+##### Examples
+Using the demo GUI generated by `./Demo/DOMdemoGUI.m`
+
+```MATLAB
+myGUI = DOMdemoGUI;
+mlapptools.fontColor(myGUI.TextArea, 'aqua');
+```
+
+```MATLAB
+myGUI = DOMdemoGUI;
+mlapptools.fontColor(myGUI.TextArea, 'rgb(255,165,0)');
+```