Merge pull request #19 from HaibingShao/react_trans_GIA

React trans gia
proper initialization
avoid unnecessary calculations
clean up the pointers
clean up the pointers
clean up the pointers
proper initialization
get time function
using JH back transformation; this version consider immobile concentration in calculating mobile ones.
update
Merge pull request #60 from zolfagha/react_trans_GIA

React trans gia