Rename PHPunit to explicitly mention PEAR

Kind of related to
https://github.com/silverstripe/silverstripe-framework/pull/3049
Docs - add descriptions of scripts and software
SS helper tasks

Fixes #24

- auto chmod assets folder
- remove error pages
- chmod sake
Merge pull request #26 from willmorgan/pulls/silverstripe-tasks

SS helper tasks
Merge pull request #25 from willmorgan/pulls/phpunit-scriptname

Rename PHPunit to explicitly mention PEAR
Need to quote the return value
Merge pull request #31 from Focus-Flow/bootsrap-test-fix

Need to quote the return value
Setting apache to run as vagrant

This fixes issues to do with httpd running on unix hosts. For some reason apache can't write to the assets folders and so on and one can't change the access permissions to those folders in the guest.

This gets around the problem by running apache as vagrant (the user that owns the mounted folder)
Prevent apache exiting after failing to find a webroot.

An `exit 1` from the apache script aborts the entire provision, this isn't ideal.

Instead we now simply link the webroot if we find it, otherwise it remains
Changing install order so PHP is done first

PHP has a dependency on apache when installed using yum. Therefore we can increase the provision speed by installing php first.
Merge pull request #34 from dhensby/pulls/php-install-first

Changing install order so PHP is done first
Merge pull request #32 from dhensby/pulls/run-apache-as-vagrant

Setting apache to run as vagrant
Merge pull request #33 from dhensby/pulls/fix-apache-exit

Prevent apache exiting after failing to find a webroot.
adding always script fixes #27
Merge pull request #35 from dhensby/pulls/always

adding always script