update framework to v2.2.2870-beta
fix demo project for iOS 8;
fix: iOS 7 incompatiblity;
added iOS 8 support section to readme
add: badges;
add: PanicARKit.strings to Demo project;
update framework to v2.2.2914
update framework to v2.2.2930
Merge branch 'refs/heads/beta'

Conflicts:
	Readme.md