layout + pipeline
updated layout
Merge branch 'master' of ssh://github.com/wercker/wercker-devcenter into pipeline
boxes section
Fix small typo
on boxes
removed benefits and concepts
better intro text
added github link
Adds pipeline article and assets
Descripes the build pipeline
Adds some informatino about packaging
Merge branch 'pipeline' of github.com:wercker/wercker-devcenter into pipeline

Conflicts:
	source/articles/boxes/index.md
Explain where the pipeline is generated
Adds introduction text for deployments
Improve builds introduction text
Adds short todo at the end of the article
Move triggers text to own header
Some small text edits
updating docs