Autoload fixes for installs via Composer

- the environaut.phar file is back in the repository for the moment
- the psr-0 autoloading in composer.json has now trailing \\
- added a simple xml config file in docs/examples/minimal.example.xml
- fixed some paths in the bin/environaut and bootstrap.php files
removed target-dir property and chg phar location
update README and CHANGELOG prior new release
added libxml to composer.json as suggested lib
fix autoload path when installed via composer
Merge pull request #9 from graste/0.2.1

Update master to latest upcoming release branch 0.2.1