Fixed some issues with intra-word italics in markdown
Normalized a lot of documentation to use markdown ruby blocks to fix some display irregularities
Fixed gherkin LexingError
Changed incorrect triple-quote ruby markdown blocks to correct triple backticks
Missed a couple incorrect triple quote ruby markdown blocks
Merge pull request #195 from soulcutter/docs-normalization

Documentation fixes for markdown intra-word italics and adding ruby markdown blocks