Add Bundler and Rake gem
Add Rake tasks and ignore log file
Add ERB parsing to YAML configuration

This allows you to insert shell configuration or other Ruby
code in ERb tags in your YAML configuration.
Fix glaring inconsistency in `rake stop`
Regroup Rake tasks

- Add server namespace and put stop/start into it. You can now
  call these tasks with `server:stop` and `server:start`.
- Add server task which toggles between stop & start based on
  existance of a PID file.
- Add logs:purge task for removing & retouching the `log` file
  at the root of the repo.
Merge branch 'erbified-yaml-configuration' of git://github.com/eLocal/Jently into develop
Merge conflicts in .gitignore