minor cosmetic improvements

poster.tex

@@ -164,7 +164,7 @@ Object categorization methods are trained to recognize \textbf{1000s of classes}
 
 \end{block}
 
-\begin{block}{\Large Example: Fine-tuning}
+\begin{block}{\Large Example: Flexible Fine-tuning}
   \input{finetuning.tex}
 \end{block}