preparing release 1.0.1
simplified installation instructions using Composer
clarified a changelog entry about compatible Symfony versions
updated copyright year range
updated license URL
added tests
let Travis run tests with Symfony 2.5.x stable and 2.6.x dev
stop testing against PHP 5.3.3
improved PSR-0 mapping
added XSD to PHPUnit configuration
no need to backup globals for tests
disable Xdebug on Travis
updated Travis config to also test against PHP 5.6 and HHVM while reducing the number of jobs
Merge remote-tracking branch 'upstream/master'