In order to find the public key token of your project you need to follow this:
1. Open the Developer Command Prompt fot VS2012.
2. Write this command (Use full path of your DLL file):

sn -T C:MyDLLdirectoryMyDLLfile.dll

3. Automatically it shows you your token:

Microsoft (R) .NET Framework Strong Name Utility Version 4.0.30319.17929
Copyright (c) Microsoft Corporation. All rights reserved.
Public key token is 76861r05e13c7c15