Atom feed should have absolute uris

I didn't actually check out this code to test it (I don't have a working vm with Mirage right now) but I'm a lurker and the relative links in the Atom feed were starting to bug me. I'm open to other ways to accomplish this if there's a better one.
Merge pull request #32 from mor1/master

deprecate out of date blog posts; update makefile to remove static fs file
add travis test scripts
mirage-net dep
Testing tweak to try out Travis
Port to Cow 0.7.0 API (an xml:base header)
Travis: test all the variants (unix-direct, unix-socket, xen) across 4.00.1 and 4.01.0
travis: fix typo in shell script
remoev the 4.1+xen backend as that's known not to work yet
Merge pull request #33 from avsm/master

Testing tweak to try out Travis
travis: use new PPA structure rather than building ocaml from source
travis: add OPAM_VERSION
Merge pull request #34 from avsm/master

travis: use new PPA structure rather than building ocaml from source
Merge pull request #30 from mthurman/patch-1

Atom feed should have absolute uris
Add support for retrieving a deployment key for mirage/mirage-www-deployment
Merge branch 'travis-senv'

Conflicts:
	.travis-ci.sh
	.travis.yml
resolve more merge conflicts
whitespace
fix travis.yml post merge
travis: opam config env