add Archlinux CI status

README.md

@@ -19,7 +19,7 @@ Do NOT require to be `root/sudoer`.
 6. pfsense with bash and curl
 7. openSUSE [![](https://cdn.rawgit.com/Neilpang/letest/master/status/opensuse-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)
 8. Alpine Linux [![](https://cdn.rawgit.com/Neilpang/letest/master/status/alpine-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status) (with bash, curl. https://github.com/Neilpang/le/issues/94)
-9. Archlinux 
+9. Archlinux [![](https://cdn.rawgit.com/Neilpang/letest/master/status/base-archlinux.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)
 10. fedora [![](https://cdn.rawgit.com/Neilpang/letest/master/status/fedora-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)
 
 For all the build status, check our daily build project: