Updating revision.txt

Author: Federico Fissore

build/shared/revisions.txt

@@ -7,6 +7,7 @@ ARDUINO 1.5.5 BETA
 * Improved auto format: now handled by Artistic Style http://astyle.sourceforge.net/
 * Improved SSH uploader (Arduino Yun): uses file ~/.ssh/config if available. Allows public key only authentication and ssh servers listening on ports other than 22.
 * Font anti-aliasing now ON by default (users will have to either delete or manually edit their preferences.txt file)
+* Added warning message when opening sketches with additional files with illegal names
 
 [libraries]
 * avr: Fixed buffer overflow in File::doBuffer() (dreggy)