'**SUMMARY**
Get the average of the R,G,B values
**PARAMETERS**
* *rgb* - a tuple of RGB values
**RETURNS**
Average value of RGB
**EXAMPLE**
>>> c = Color.getAverageRGB((22,35,230))'

@classmethod
def getAverageRGB(self, rgb):

    return int((((rgb[0] + rgb[1]) + rgb[2]) / 3))
