doc: Replace README by previous NEWS in Markdown format
-rw-r--r-- 113 .gitattributes
-rw-r--r-- 275 .gitignore
-rw-r--r-- 32 AUTHORS.txt
-rw-r--r-- 19182 CMakeLists.txt
-rw-r--r-- 1479 COPYING.txt
-rw-r--r-- 9175 ChangeLog.txt
-rw-r--r-- 2382 INSTALL.txt
-rw-r--r-- 10884 README.md
drwxr-xr-x - cmake
drwxr-xr-x - doc
drwxr-xr-x - src
drwxr-xr-x - test