cleanup winner README.md files

Fixed cases where there was a bad trailing backslash.

Improved a few cases where a code block was needed
to highlight some text.

Changed a few cases where a code block needed to
declared as, say, a sh code block.

Fixed a few cases where the winner information was not properly formatted.

Plus a few nits and clarifying text was added.

2014/maffiodo2/README.md

@@ -1,8 +1,8 @@
 # Most tweetable entry
 
-    Sandro Maffiodo\
-    <smaffer@gmail.com>\
-    <http://www.assezeta.com/sandromaffiodo>
+Sandro Maffiodo\
+<smaffer@gmail.com>\
+<http://www.assezeta.com/sandromaffiodo>
 
 
 ## To build: