added 'share' to events/_item
final update for tweet feature
moved inline css to default application.css
add style to layout.css as it appears to be the one in use
added #sub to root_url in fb-like data-href attribute
changed default tweet text and added open graph tags
changed hard coded reference of site name to SETTINGS.name
changed names of a couple of things to be more descriptive
Extract generation of non-localhost URLs to shareable_event_url helper

Refs #17
Don't use 1.9 hash syntax in EventsHelper (yet)

Refs #17
Switch from a FB like button to a share intent

Refs #17
Don't show share buttons for non-persisted events

Refs #17
Handle share links for events without a venue

Refs #17
Updated change log and contributors for share links
Merge pull request #17 from tehprofessor/master (with additions)

Added Share header w/ 'Tweet' and 'Like' buttons