Fixes regression on Windows where composer update and composer install because the path is hardcoded to only work on *nix systems.
NEW: Added post-install and post-update dev/build call.
IIS 7.5 does not like forward slash at the end of silverstripe-cache
Fixing .htaccess to ignore rewriting PHP files directly
Remove compass dependency, too slow even for development at the moment
(requires PHPUnit 3.6, so marking that as the minimum requirement in comments)
…hat is done in the 2.4 branch)
…es to .gitignore