Added support for loading the bootstrap file from PHPUnit configuration - This addresses #28. If a bootstrap is specified but cannot be found, a RuntimeException is now thrown.
getBootstrap now ensures that the configuration XML has been loaded before attempting to access it.
Improved getConfig() and fixed bug where a string was being returned instead of a Configuration object.
Coding standards.
Bootstrap now loaded relative to config folder when specified in configuration file.
Merge branch 'master' of https://github.com/brianium/paratest
Improved coding standards and added test for invalid bootstrap.

Conflicts:
	src/ParaTest/Console/Testers/PHPUnit.php
Merge pull request #35 from pwarnes/master

Load bootstrap from PHPUnit configuration if not specified on the command line