Created FAQ #6 (markdown)

FAQ-#6.md

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+### Is there a way to specify a color using a color wheel? 
+The color wheel routines you may have seen in other code is really a hack of the core feature of HSL or HSB(HSV) color space.  The number often represented in degrees of 0 to 360 is actually the Hue value for this alternate color spaces.  Its called a color wheel as these color spaces are often displayed as a wheel as their target audience was visual designers and not engineers.  
+
+NOTE: There is no HsvColor in my library, as HsbColor is really the same thing.  
+
+You can thus just use the HslColor or HsbColor objects to accomplish this.  In the case of my library, the Hue value range is 0.0 to 1.0 instead of 0 to 360, so some minor math will correct that.
+```
+   RgbColor WheelColor(uint16_t wheelValue) {
+       // divide the wheelValue by 360.0f to get a value between 0.0 and 1.0 needed for HslColor
+       return HslColor(wheelValue / 360.0f, 1.0f, 0.5f); // this will autoconvert back to RgbColor
+   }
+
+// latter in the code
+
+   RgbColor newColor = WheelColor(277);
+   strip.SetPixelColor(0, newColor);
+```
+The better approach is retrain yourself that when you see a wheel value, it means Hue.  So you just use either HslColor or HsbColor in the first place.
+```
+   HslColor newColor(277/360.0f, 1.0f, 0.5f);
+   strip.SetPixelColor(0, newColor);
+```