first edits to image documentation
added to images documentation
more image documentation edits
added documentation of loading and inserting images in posts
formatting and small edits for image documentation
[new] site configuration - rake background
[edit] readme update – noting Kramdown
[edit] configuration.md docs – outline and more Alfred/rake info
[edit] configuration.md docs – definitions
[edit] configuration.md docs – CSS section and re-wording other sections
[edit] configuration.md docs – filling in missing sections on Liquid etc.
[edit] configuration.md docs – much more about Liquid, YAML and config problems
[edit] configuration.md docs – copyediting
Merge pull request #114 from opattison/20140208-documentation

Documentation for the site – closes #111