Initial WIP commit for ruby
fixes typos in the boolean results
Adds sections for symbols, hashes, and yields
changes string interpolation text as suggested by @fbernier
Adds emphasis about the object-oriented nature of ruby, and removes references to lesser-used array functions
Adds class documentation written by @joelwalden in #95
Updates YAML front-matter to match #97
Merge pull request #18 from davefp/ruby

Ruby