fix typo in README

README.md

@@ -274,7 +274,7 @@ Configure and make:
     - ```brew install texi2html```
 - **(On OS X 10.7 Only)** Copy [FlexLexer.h](http://www.dynare.org/DynareWiki/BuildingDynareFromSource?action=AttachFile&do=view&target=FlexLexer.h) into the `preprocessor` directory (there was an error in the `FlexLexer.h` file distributed with 10.7)
 - Finally, switch to the root dynare directory. Ensure your path contains `/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/texbin:/usr/local/sbin`. Run:
-    - `autoconf -si`
+    - `autoreconf -si`
     - `./configure --with-matlab=/Applications/MATLAB_R2013a.app MATLAB_VERSION=8.1 YACC=/usr/local/Cellar/bison/<<BISON VERSION>>/bin/bison`
     - `make`
     - `make pdf TEXI2DVI=/usr/local/Cellar/texinfo/5.2/bin/texi2dvi`, where you replace everything after the equal sign with the path to the `texi2dvi` installed by homebrew when you installed `texinfo`.