Switch vagrant dev box to Ubuntu and up the RAM
Add stubbed code to create rake secret, copy/configure .env.example, configure database.yml from template, etc
Currently failing:

```
Chef Client failed. 11 resources updated in 49.91739948 seconds
[2014-09-13T03:09:37+00:00] ERROR: deploy_revision[huginn] (/home/vagrant/chef-solo/cookbooks-2/application/providers/default.rb line 123) had an error: Mixlib::ShellOut::ShellCommandFailed: execute[create-rake-secret] (/home/vagrant/chef-solo/cookbooks-2/rbenv/providers/execute.rb line 25) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '2'
---- Begin output of       rake secret > /home/huginn/current/rakesecret
 ----
STDOUT:
STDERR: sh: 1: cannot create /home/huginn/current/rakesecret: Directory nonexistent
---- End output of       rake secret > /home/huginn/current/rakesecret
 ----
Ran       rake secret > /home/huginn/current/rakesecret
 returned 2
```

Can't tell why, /home/huginn/current/ exists, and it should be able to create the file 'rakesecret'