Add link to LDP spec

Author: acoburn

README.md

@@ -1,6 +1,6 @@
 # static-ldp
 
-A simple way to expose static assets as a read-only LDP server.
+A simple way to expose static assets as a read-only <a href="https://www.w3.org/TR/ldp/">LDP</a> server.
 
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