Make section 3 a little more concise and address referee feedback by
not having so many small subsections, only using one style and
sticking to it in this section, and not talking about ill defined
'pseudo-methods'.

Sorry I didn't build this yet about to go home wanted to easily
capture some edits on work computer.  hopefully it doesn't break the
build. will be easy to fix if i did.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@898 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Comment out additional redundant information to make section 3 a more
concise introduction.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@899 edb9625f-4e0d-4859-8d74-9fd3b1da38cb