2014-02-09: mark code examples as code.

mark code examples as code.

diff --git a/README b/README
--- a/README
+++ b/README
@@ -18,13 +18,11 @@ Wisp turns indentation based syntax into
 [wisp-repository]: http://draketo.de/proj/wisp
 
 
-Bootstrap: autoreconf -i && ./configure && make
+Bootstrap: `autoreconf -i && ./configure && make`
 
-Usage: guile ./wisp.scm infile.wisp > outfile.lisp
+Usage: `guile ./wisp.scm infile.wisp > outfile.scm`
 
-Usage on the REPL (guile shell):
-
-    guile -L . --language=wisp # run this in the wisp-folder
+Usage on the REPL: `guile -L . --language=wisp # run this in the wisp-folder`
 
 Also see `./wisp-multiline.sh --help`