Merge branch 'hotfix/0.2.4'
fix typo in vbox server startup command
fix another vboxwebsrv typo
Merge pull request #35 from mpenet/master

fix typo in vbox server startup command
Merge branch 'release/0.2.5'
Merge branch 'release/0.2.6-beta.1'
Merge branch 'release/0.3.0-alpha.1'
Update README: broken debian/ubuntu + vbox.home doco
Extend notice on java/xpcom brokenness to all ubuntu 12
Update version to 0.3.0-SNAPSHOT
Update session cleanup and disconnect
Factor out lock-machine and unlock-machine
Remove reflection warnings
Ensure model images are immutable before use (Fixes #46)
configure-network can now add port-forwarding rules to adapters.

Example: to configure an adapter that port forwards the host's port 8008 to the
guest's port 80:

(configure-network machine {:attachment-type :nat
                            :nat-rules [{:name "http", :protocol :tcp,
                                         :host-ip "", :host-port 8080,
                                         :guest-ip "", :guest-port 80}]})
Add import of vagrant .box urls to setup-model
Add get-network-adapters and get-network-interfaces

Add functions in manager and machine to get network interface and adapters as maps.
Remove clj-http dependency
Fix the virtualbox metadata

When options are supplied, merge them rather than rely only on the options
passed.
Add usage of public vagrant key for .box images