Added french translation to CHANGELOG

Author: John Crepezzi

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 * Validate rules (and raise ArgumentError) on invalid `from_hash`
 * Make the iCal parser use the `from_hash` implementation under the hood
-* Added i18n translations for Russian, Swedish, and German
+* Added i18n translations for Russian, Swedish, German, and French
 * Raise ArgumentError on invalid from_ical (empty)
 
 ## 0.14.0 / 2016-02-23