Adding precisions in README

Author: Jean THOMAS

README.md

@@ -12,10 +12,13 @@ These instructions suppose you already have a working LCDproc installation. If n
 
  * Stop LCDproc service if running
  * Make a backup of the current SDEC driver :
+ 
  ```bash
  mv /usr/local/lib/lcdproc/sdeclcd.so /usr/local/lib/lcdproc/sdeclcd.so.bak
  ```
+ 
  * Download the patched sdec driver ([our builds are available here](https://github.com/LabCellar/FireboxLCDprocMod/releases)) and copy it to `/usr/local/lib/lcdproc/`
+ * Set correct permissions for the new driver : `chmod +x /usr/local/lib/lcdproc/sdeclcd.so`
  * Start LCDproc service
  * Enjoy !