Merge pull request #30 from jparyani/fix-getuseraddress

Remove `.address` when getting addresses for services
Update installer to offer non-root installation.
Merge branch 'master' of github.com:sandstorm-io/sandstorm
Update to Meteor 0.8.2 and massively reduce build time.

Meteor 0.8.2 includes my patch that allows "meteor bundle" to output a directory rather than a tarball, avoiding a compression step that's a waste of time for us since we just decompress the bundle immediately anyway.

I also added the XZ_FLAGS make variable which when set to -0 cuts about 40 seconds (i.e. most of it) off the build time.
Fix bug with 'spk dev' after UID namespaces update.
Oops, need this too.
Implement rudimentary seccomp support.
Merge pull request #32 from amluto/seccomp

Implement rudimentary seccomp support.
Add 'minibox' sandbox tool for use when running things like zip/unzip on user data.
Use 'minibox' to sandbox zip/unzip for backup/restore.

This also allows us to avoid the copies we were doing before, which lets us drop the fs-extra package. I already had a recursive-rmdir implementation. It's synchronous, but that seems OK for now.
After deleting a grain, return to home screen. Fixes #31.
Merge branch 'master' of github.com:sandstorm-io/sandstorm
Add some more seccomp filters, particularly to disable user namespaces because they are kind of scary.

Yes, Sandstorm itself totally relies on user namespaces, but we don't want sandboxed apps to do so.

Also re-enable ptrace in dev mode, because it's really useful. But keep in blocked when not running via spk dev.
Add comments to installer script describing exactly what it does.
typo
Set correct content type on backups and correctly quote the filename. This makes things work better on Firefox. Unknown at this point whether this will fix the issue in production where the .zip extension gets lost (issue #34).
Increase xz compression level for releases.
Add Brian and David to front page.
Fix home page rendering on iPad 1. Add demo link.
Tweak demo UX.