add --r2r option for nitool to test ready-to-run feature of coreclr 2.1 20/180120/2
-rw-r--r-- 11358 LICENSE
drwxr-xr-x - NativeLauncher
-rw-r--r-- 531 README.md
-rw-r--r-- 79 dotnet-launcher.manifest
drwxr-xr-x - packaging
drwxr-xr-x - tools