Create REAMDE.md file for M113 data.
Create REAMDE.md file for M113 data.

This file lists the various public sources for the M113 vehicle data
Milad-Rakhsha/chrono,dariomangoni/chrono,armanpazouki/chrono,andrewseidl/chrono,jcmadsen/chrono,projectchrono/chrono,tjolsen/chrono,jcmadsen/chrono,jcmadsen/chrono,amelmquist/chrono,andrewseidl/chrono,dariomangoni/chrono,dariomangoni/chrono,tjolsen/chrono,armanpazouki/chrono,rserban/chrono,tjolsen/chrono,amelmquist/chrono,armanpazouki/chrono,tjolsen/chrono,jcmadsen/chrono,andrewseidl/chrono,rserban/chrono,Milad-Rakhsha/chrono,armanpazouki/chrono,jcmadsen/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,Milad-Rakhsha/chrono,amelmquist/chrono,tjolsen/chrono,rserban/chrono,jcmadsen/chrono,projectchrono/chrono,andrewseidl/chrono,andrewseidl/chrono,amelmquist/chrono,jcmadsen/chrono,amelmquist/chrono,armanpazouki/chrono,amelmquist/chrono,armanpazouki/chrono,projectchrono/chrono,projectchrono/chrono,rserban/chrono,Milad-Rakhsha/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono,dariomangoni/chrono