add PSR-1 proposal
extend intro narrative, add survey data and results
include notes on what was purposely omitted
split tied PSR-1 into basic and advanced
clarify language on closing braces
incorporate some ideas from Andrew Eddie, most notably section numbering and the 'Files' section
Merge branch 'psr-1-style-guide' of github.com:pmjones/fig-standards into psr-1-style-guide
monospace change
typo fix
add note about underscore-preixed properties
add side-effects section with brief example
Merge branch 'psr-1-style-guide' of github.com:pmjones/fig-standards into psr-1-style-guide
remove scare quotes
remove visibility note on properties
extend the examples of side effects
add RFC 2119 keywords
add survey legend
update with RFC 2119 keywords
expanded on method and function calls
in deference to Joomla, the Vendor_ prefix on 5.2.x code is now a SHOULD, not a MUST