Add title, article URL, and details URL to SZNAltmetricArticle

Update unit tests
Update demo apps to display title
Add ADSBibcode, addedOn, lastUpdated, and publishedOn to SZNAltmetricArticle

Update unit tests
Update OS X demo app
Add links to README
Add NLM Identifier and openAccess properties to SZNAltmetricArticle

Update Mac OS X demo app layout
Update podspec for tag 0.2
Add citations count properties to SZNAltmetricArticle
Add journal property to SZNAltmetricArticle
Merge pull request #1 from shazino/development

New properties for SZNAltmetricArticle