Updated html header info
Setup js file for use
Updated js header
L3: added intention comment
added variables section
added define comment and birthM prompt
defined birthY variable and prompt
defined currentM variable and prompt
defined currentY variable with prompt
defined bgCheck varaible and prompt
added comment to define function section of code
defined intent of function and first line of function
defined timeCMI variable with integer parsing
defined timeCYI variable with integer parsing
defined timeBMI variable and integer parsing.
defined timeBYI variable and integer parsing.
defined currentMonths and initial equation.
defined birthMonths variable and stage 2 of equation.
defined ageYears and equation to convert to years.
defined return operation for ageYears and closed function