Adding Getting started draft.  It is likely that I will break this up
Merge branch 'master' of github.com:PaulKinlan/WebDocs
Adding Video article
Adding .DS_Store
Updating link targets in _book.yaml
Updating video
Adding Images, these will change
Moving video section around adding images
Updating video
Adding critical rendering path doc
Fixing up critical rendering path article
after first edit
edited v2 doc
adding some initial styling
Merge branch 'release/pre-development_housekeeping' in to master