Merge pull request #3 from rodneyway/master

Changed rsync call to retain symlinks between releases during delpoyment
Copy _config/ folder's local.yml file
FIX Changed to use 3.0 branch by default
Updated gitignore to exclude silverstripe-cache. Added expires + cache info to default htaccess
Added default composer.json file
Update composer.json
Add phing post-install command
Merge branch 'master' of github.com:silverstripe-australia/silverstripe-base
Removed composer script for now as it causes an infinite loop on executing...
API Deployment assistance files

* Added a default post_deploy.php script that will trigger after
  the site has been deployed
* Added a path_check.php script and a status folder that will allow external
  services to check $_FILE_TO_URL_MAPPING is correct
Added requirement for mod_headers in description
Updated the composer execution to run either update or install depending on existence of lock file
Changed order of execution for changing permissions to AFTER site has been
'deployed' and allow it to fail if needbe (it'll be logged if that's the case)
Change logic for determining 'last' deployment to only include dirs that are actually release timestamps