added more special characters and removed commented out code
added TODO for future dates in feeds
added semi colon
added another cache object for local storage and changed methods to allow for acessing a type of storage local vs session.  session cache flushes and is not persistent while local storage is persistent
store and retrieve data from cache service rather than device storage service
added xml to jsons transformer, getPreviousDatetime function and added to the html character object.  also removed commente out code
changed date property for headline to datetime.
changed moment js config for seconds to just now
1.made changes to date comparison since we use datetime now.
2.added markHeadlineReadForSport function to api to be called from controller.
3.removed xmlToJsonString and getPreviousDate functions since they are now in utils.
4.added function to retrieve stored read headlines from cache service, and then set them in a privte var. this is checked for each headline to determine whether or not a headline was previously read.
added ng-class to headline for isRead property.  changed date variable to datetime
changed showArticle function so that it calls headline service markheadlineasread function after opening the browser
removed commented out code for IE.  removed inclusion for deviceStorageService
added isRead class