begin refactoring javascript

move js into stories.js
create Story constructor
begin refactoring to use story object instead of global variables
add set/get functions for Story.delay
remove setSpeed function
update Story object

include bookmark and content properties
update code elsewhere to call story.bookmark story.content
set up prototype on Story for getContent()
fix getContent function on Story.prototype
define story.length, eliminate global variables
simplify story.delay setting/getting, need to parseInt value passed in
add displayLine as Story prototype function
fix issue with 'this' and recursive displayLine call
tested refactoring
Merge pull request #11 from jbwhite/refactor

Refactor