Update README.md

Author: djhvscf

README.md

@@ -16,7 +16,7 @@ To get started -- checkout http://podio.github.com/jquery-mentions-input
 - [ ] Fix #74 Mention on ordinary input field not textarea
 - [ ] Fix #26 Capital letter as trigger character
 - [ ] Fix #59 Unicode characters support
-- [ ] Fix #104 When same text which is to be mentioned already in the content
+- [X] Fix #104 When same text which is to be mentioned already in the content
 - [ ] Fix #100 New option for conserve triggerChar in output
 
 ## License