Changes to make scan example 1 fit on slide(s)

doc/nextml2015/presentation.tex

@@ -882,12 +882,13 @@ print f([0, 1, 2])
 \end{frame}
 
 
-\begin{frame}[fragile]
+\begin{frame}[fragile,allowframebreaks]
   \frametitle{Scan Example1: Computing tanh(v.dot(W) + b) * d where b is binomial}
 
 \lstset{language=Python,
         commentstyle=\itshape\color{blue},
         stringstyle=\color{violet},
+        basicstyle=\footnotesize
         }
 \begin{lstlisting}
 import theano