fix error when .vagrant_dns/run did not yet exist

 - Was missing a `super` on prefork
 - Changed tests to actaully start/stop the server
 - Add basic test around the server to catch this error
 - Clean up the Server a little bit; still more to do
bump version to v0.2.1
switch to system from backticks

as recommended by @ioquatix on a17469edba4dae720a33a31a1d1e075dbdf12edd
update readme to reflect lack of provisioner now
rename to landrush

even vagrants need a place to call their own once in awhile
tweak host resolver config so root not required to test

also stop chowning resolver config, pretty sure it's unnecessary and it
was getting in the way of testing effectively
readme tweaks
move working dir to inside vagrant data dir

eventually i'd like to hook into vagrant's environment to get this
location, but for now we'll hardcode like jerks
move host config from server boot to its own command
bump version to v0.3.0
track latest vagrant signature change in tests
fix typo from rename
bump version to 0.3.1
only remove static entries when no dependent VMs are left
O M G VMWare Fusion Support!

And refactors! I discovered Capabilities, which is how most of the
guest interation really should be done. So we're refactoring towards
that.
Fix bug in README.md related to /etc/resolver

Fixes directory naming error, changing "/etc/resolvers" to "/etc/resolver". Also, adds a description of how to verify that the DNS resolution is working.
Merge pull request #12 from greglearns/patch-1

Fix bug in README.md related to /etc/resolver
remove extraneous provisioner call
add 'enabled' guards around install/redirect
bump version to 0.4.0