fix install script based on @zdevel comment on issue #3

Author: hugomaiavieira

install

@@ -4,4 +4,4 @@ sudo cp sublime-url-handler.desktop /usr/share/applications
 sudo update-desktop-database
 
 sudo cp sublime-url-handler /usr/local/bin/
-sudo chmod +x /usr/bin/sublime-url-handler
+sudo chmod +x /usr/local/bin/sublime-url-handler