[ee] dilepton wiki and code sharing

[Zhiwen Zhao]

Dear All

I have put a "dilepton" wiki page here
https://hallaweb.jlab.org/wiki/index.php/Dilepton
in order to collect information from JPsi,TCS,DVCS together.

In particular, some codes can be shared for different purposes in different programs.
Marie's sample root tree is here for you check the format.
I am finishing up some code convert it into a text format GEMC can take, I will share it later.

Thanks and let me know any question

Zhiwen