replaced icon with icon I had previously made

post can be found here:
http://stackapps.com/questions/3081/senotifier-a-stack-exchange-inbox-no
tifier-for-mac-os-x/3335#3335.  Only commiting icon - not workspace or
any of the extra xcode garbage.  Commit includes 0 code modifications.
Added other icon that i forgot
Merge pull request #15 from ruddfawcett/master

Added those icons I had emailed you about a long time ago.