Merge pull request #88 from jjanvier/master

Small fixes on documentation of resource and cart bundles
Update README.md
Update models.rst
Merge pull request #89 from jjanvier/patch-1

Fixing CartBundle doc
Initial general guide for bundles
Add introduction to all chapters
Add events chapter to general guide
Extend the settings bundle docuementation
Initial taxation and shipping docs
Introduce User Guide concept, add basic installation instruction
Initial draft of addressing docs
Rewrite and reorganize the taxonomies bundle doc
Add VariableProductBundle, little clean up
Clean up
Merge pull request #90 from Sylius/docs-reborn

Moar docs
fix installation instructions to not specify version 0.2.*
clarify the doctrine dependency
Merge pull request #91 from dbu/patch-1

fix installation instructions to not specify version 0.2.*
Merge pull request #93 from dbu/patch-2

clarify the doctrine dependency