Drop broken p4/docs symlink and create README.md+URL

There was a symlink to a local file, which would instead work better as a URL to the bpf-docs repository. Fixes: iovisor#304 Signed-off-by: Brenden Blanco <[email protected]>
majianpeng · Dec 10, 2015 · 4b1c3dc · 4b1c3dc
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diff --git a/src/cc/frontends/p4/docs/README.md b/src/cc/frontends/p4/docs/README.md
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+# External references
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+See [p4toEbpf-bcc.pdf](https://github.com/iovisor/bpf-docs/blob/master/p4/p4toEbpf-bcc.pdf)
diff --git a/src/cc/frontends/p4/docs/p4toEbpf-bcc.pdf b/src/cc/frontends/p4/docs/p4toEbpf-bcc.pdf
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		# External references

		See [p4toEbpf-bcc.pdf](https://github.com/iovisor/bpf-docs/blob/master/p4/p4toEbpf-bcc.pdf)