Updated  "How to install Oro Platform" cookbook article.
Merge remote-tracking branch 'origin/master'
Added  "How to Add an Extension to Oro Marketplace" cookbook article.
Updated  "How to Add an Extension to Oro Marketplace" cookbook article.
Merge pull request #8 from orocrm/user_guide/how_to_create_package

Added  "How to Add an Extension to Oro Marketplace" cookbook article.
Update how_to_use_wsse_authentication.rst
Update how_to_use_wsse_authentication.rst
Update how_to_use_wsse_authentication.rst
add Sphinx configuration and describe how to generate the documentation locally