Initial import
Line wraps in documentation files
Created assets for Authentication, linked in files (absolutely)
Added recipe, with images
Fixed link to http basic failure image
Merge pull request #3 from ralphschindler/feature/auth

Authentication and Authorization documentation
[#3] Edits to "advanced" document

- Use Markdown for tables
- Mark all class names/constants as code ("``")
- Some editing for flow and to reduce redundant verbiage
- Page level heading; reduced heading levels for subheadings
[#3] Reviewed HTTP Basic chapter

- Normalisation: all references to "HTTP Basic" use the same capitalization now.
- Bracketed string for images is the alt tag, not the filename; substituted relevant image
  descriptions.
- Status codes, header names, and filenames should be enclosed in code tags.
Expanded contribution guidelines

- Added IETF syntax: MUST, SHOULD, etc.
- Added items for:
  - file names
  - PHP references
  - HTTP messages
  - Image "alt" tag syntax
  - Tables
  - Lists
Added guideline for headers
Added recommendations section

- Recommending adding files to the TOC.
[#3] Reviewed Digest chapter
[#3] Edited "Authentication" chapter
[#3] Reviewed OAuth2 chapter
[#3] Edited Authorization chapter
[#3] Edited intro
[#3] Reviewed custom acls recipe
[#3] Added entries to TOC
Merge branch 'feature/3'

Close #3
Replaced several HTTP Basic images with code blocks

- Show console commands as fenced code blocks
- Show PHP configuration as fenced code blocks
- Show HTTP requests as fenced code blocks
Use fenced code blocks for console, HTTP

- Modified to use fenced code blocks for console tool demonstrations, as well as
  HTTP examples