Merge pull request #50 from pborreli/typos

Fixed typos
Update services.xml

Class definitions added to parameters to provide easier overriding possibility.
Merge pull request #51 from nikolajosipovic/master

Update services.xml
Added CONTRIBUTING.md file
Merge pull request #53 from Bladrak/contributing

Added CONTRIBUTING.md file
Update sitemap.rst
Changed "metadatas" to "metadata" in twig_helpers
Merge pull request #55 from r1pp3rj4ck/patch-1

Changed "metadatas" to "metadata" in twig_helpers
catch exception if timeout is reach
add specific name
Merge pull request #54 from ronanguilloux/patch-1

Update sitemap.rst
fix issue with the breadcrumb service code
Fixed typos