Merge pull request #15 from ebpffoundation/draft-readme

Add pointer to Internet-Draft format in the README

Author: dthaler

README.md

@@ -1,8 +1,10 @@
 # eBPF Standard Documentation
 
 This repository is a working draft of standard eBPF documentation
-to be published by the eBPF Foundation in PDF format.  The current
-draft PDF is [here](https://github.com/ebpffoundation/ebpf-docs/blob/pdf/instruction-set.pdf).
+to be published by the eBPF Foundation in PDF format.
+
+* [Current draft PDF](https://github.com/ebpffoundation/ebpf-docs/blob/pdf/instruction-set.pdf).
+* [Current Internet-Draft working copy](https://htmlpreview.github.io/?https://raw.githubusercontent.com/ebpffoundation/ebpf-docs/pdf/draft-thaler-bpf-isa.html)
 
 The authoritative source from which it is built is expected to be
 in the Linux kernel.org repository, but not be Linux specific.