Add table of contents and version.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

protocol/protocol.tex

@@ -190,11 +190,16 @@
 
 \begin{document}
 
-\title{Zcash Protocol Specification}
-%\subtitle{Version: 2.0-draft}
+\title{Zcash Protocol Specification \\
+\Large Version 2.0-draft-1}
 \author{Sean Bowe | Daira Hopwood | Taylor Hornby}
 \date{\today}
 \maketitle
+
+\tableofcontents
+\newpage
+
+
 \section{Introduction}
 
 \Zcash is an implementation of the \term{Decentralized Anonymous Payment}
@@ -858,7 +863,7 @@ Note that the value $\CoinCommitS$ described as being part of a \coin in the
 \Zerocash paper is not encoded because the instantiation of $\COMM{\CoinCommitS}$
 does not use it.
 
-\subsection{Raw Encoding}
+\subsubsection{Raw Encoding}
 
 The raw encoding of a \coinPlaintext consists of, in order: