API edits to avoid implying that JSON-LD is not RDF

As promised, attached are suggested edits to the "JSON-LD 1.0 Processing 
Algorithms and API" document at
http://json-ld.org/spec/latest/json-ld-api/index.html
The purpose of these edits is to avoid implying that JSON-LD is not RDF. 
  The main strategy was to change phrases like "transforms JSON-LD to 
RDF" and "converts RDF to JSON-LD" to phrases like "deserializes JSON-LD 
to RDF" and "serializes RDF to JSON-LD".

Note that some of the section titles changed as a result, and two HTML 
anchors were also changed:

   convert-to-rdf-algorithm --> deserialize-to-rdf-algorithm

   convert-from-rdf-algorithm --> serialize-from-rdf-algorithm

Therefore other documents that reference this document may need to be 
updated correspondingly.

Three files are attached:

  - json-ld-api-index.html.old: This is a snapshot of the original file, 
before I made any changes.  I made this snapshot in case someone else 
was also editing the file at the same time, so it provides a clean basis 
for a "diff" comparison.

  - json-ld-api-index2.html: The new version in which I made edits to 
avoid implying that JSON-LD is not RDF.   I also corrected a few 
unrelated typos that I noticed along the way, I removed the obsolete 
mention of RDF disallowing blank node named graphs (since they are now 
allowed), and I added text on suggested work-arounds for users that want 
to retain the information contained in triples that have blank node 
predicates.

  - json-ld-api-index2-diffs.txt: Diffs between the above two files.

Let me know if you have questions.

Thanks!
David