Change Branch & Clean bodyfat
fix some bug in simulation Perfect!
clean bodyfat & finance code
fixed bug in bodyfat application
add Ghat.m
Merge branch 'CleanCode' of https://github.com/zmchary/Estimation_With_Two_Steps into CleanCode

fixed bug in bodyfat at dahai
-a
creat a merge conflict
Merge branch 'CleanCode' of https://github.com/zmchary/Estimation_With_Two_Steps into CleanCode
Merge branch 'CleanCode' of github.com:zmchary/Estimation_With_Two_Steps into CleanCode