Merge pull request #10 from oracle/fix-readme

clarify what oci stands for

Author: vishvananda

README.md

@@ -5,10 +5,12 @@
 
 ## What is `railcar`? ##
 
-`railcar` is a rust implementation of the oci-runtime spec. It is similar to
-the reference implementation `runc`, but it is implemented completely in rust
-for memory safety without needing the overhead of a garbage collector or
-multiple threads. For more information on the development of railcar, check out
+`railcar` is a rust implementation of the [opencontainers
+initiative](https://www.opencontainers.org/)'s [runtime
+spec](https://github.com/opencontainers/runtime-spec). It is similar to the
+reference implementation `runc`, but it is implemented completely in rust for
+memory safety without needing the overhead of a garbage collector or multiple
+threads. For more information on the development of railcar, check out
 [Building a Container Runtime in
 Rust](https://blogs.oracle.com/developers/building-a-container-runtime-in-rust)