Merge pull request #236 from orangeudav/patch-1

Fix OS X's version detecting

stlinkv1_macosx_driver/README

@@ -22,4 +22,11 @@ tar xzvf osx.tar.gz
 Then, install the driver using:
 sudo make osx_stlink_shield
 
-no reboot required.
+no reboot required.
+
+P.S. If error `OS X version not supported` occurs. For the latest versions of Mac OS X you may need to change the `osx/install.sh` as follows:
+```
+< ISOSXLION=$(sw_vers -productVersion)
+---
+> ISOSXLION=$(sw_vers -productVersion | sed -e 's:.[[:digit:]]*$::')
+```