ARTEMIS-3966: simplify readme following recent updates
drwxr-xr-x - .github
-rw-r--r-- 557 .gitignore
-rw-r--r-- 837 CMakeLists.txt
-rw-r--r-- 11358 LICENSE
-rw-r--r-- 186 NOTICE
-rw-r--r-- 4346 README.md
-rw-r--r-- 5237 RELEASING.md
drwxr-xr-x - etc
-rw-r--r-- 26618 pom.xml
drwxr-xr-x - scripts
drwxr-xr-x - src