Adds a pallet project file

This is a basic pallet configuration.  It creates a vm running clojars
from a local checkout using the test data.

To use it:
  lein pallet add-vmfest-image \
    https://s3.amazonaws.com/vmfest-images/ubuntu-10-10-64bit-server.vdi.gz
  lein pallet up
Merge branch 'feature/add-pallet-config' of https://github.com/hugoduncan/clojars-web
Update to latest pallet versions
Merge branch 'feature/add-pallet-config' of https://github.com/hugoduncan/clojars-web
Attempt to verify signature multiple keys

The PGP string can encode multiple keys.  Lets try and if any
of them can verify the signature.

Fixes #130.
Release 0.13.7