- Changed default kestrel address
Squashed commit of the following:

commit b1e743a9188181bca87728692e9753bf44c6d8cf
Author: Álvaro Villalba Navarro <alvaro.villalba@bsc.es>
Date:   Mon Feb 24 17:38:34 2014 +0100

    - Changed default kestrel address

commit 87c1cc40fb73881129aae32862592b1c76703c60
Author: Álvaro Villalba Navarro <alvaro.villalba@bsc.es>
Date:   Mon Feb 24 14:42:45 2014 +0100

    - changed spymemcached dependency from 2.9 to 2.10.4

commit d85e2c4a274d07616f2ff35f84ef2eedbf5fa11f
Author: Álvaro Villalba Navarro <vn.alvaro@gmail.com>
Date:   Sun Feb 23 17:02:06 2014 +0100

    Needed to make QueueClient serializable too

commit 430f319c8f789d21f7d9b6db068526f5d6dd0d3f
Author: Álvaro Villalba Navarro <vn.alvaro@gmail.com>
Date:   Sat Feb 22 16:14:17 2014 +0100

    The simple queue now uses a file, so it can be used to communicate
    between multiple programs. It is useful for testing purposes, but must
    be avoid for production environments

commit b17377e71c9ddb1b1f1ebb0215eeedd2564474da
Author: Álvaro Villalba Navarro <vn.alvaro@gmail.com>
Date:   Fri Feb 21 21:28:23 2014 +0100

    Now serializable

commit 726811b00896c2c19282923dec7255b6dd95ae34
Author: Álvaro Villalba Navarro <vn.alvaro@gmail.com>
Date:   Fri Feb 21 16:55:18 2014 +0100

    Added get to the abstract class