Update phpspec
[CartBundle] Fix cart bundle spec & few fixes for README file
[InstallerBundle] Fix spec to work with newest phpspec
[InstallerBundle] Fix README file
Merge pull request #784 from stloyd/bugfix/cart_spec

[CartBundle] Fix cart bundle spec & few fixes for README file
Merge pull request #785 from stloyd/bugfix/installer_spec

[InstallerBundle] Fix spec to work with newest phpspec