Created HtmlColor object API (markdown)

HtmlColor-object-API.md

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+HtmlColor represents a color object that uses the Html color value standard that is represented by a single uint32_t.  The primary use of this class is to convert to other color objects.
+Below is an example that will create a RgbColor with the Html color value for yellow.
+```
+RgbColor yellow( HtmlColor( 0xffff00 ) );
+```
+
+
+## Properties
+There is one property that represents the coded component values Red, Green, and Blue.  The values range from 0 to 0xffffff.  Black would 0 and white would be 0xffffff.  
+This value is three coded bytes of red, green, blue component values.  The value 0xff7f10 decoded is red = 255 (0xff), green = 127 (x7f), and blue = 16 (0x10).  
+```
+uint32_t Color;
+```
+## Constructors
+
+### HtmlColor(uint32_t color) :
+Constructs a HtmlColor using the given value.
+
+### HtmlColor(RgbColor color);
+Construct a HtmlColor using a RgbColor , converting the Rgb component values to the single Html value.
+
+### HtmlColor()
+Construct a HtmlColor that will have its values set in latter operations.  
+CAUTION:  The Color member is not initialized and may not be consistent until set.
+
+## Methods
+(none)
+