minor updates

getMonitoredRegionIds, getPendingRegionUpdates, accuracy fixes. read me
update.
read me additions
examples
more read me updates
isMonitoringAvailableForClass

fixed regionMonitoringAvailable for iOS 7.0+ with
isMonitoringAvailableForClass
better support for iOS 7

isRegionMonitoringEnabled updated to check authorizationStatus for iOS
4.2+ as regionMonitoringEnabled is deprecated for iOS 6; add
maximumRegionMonitoringDistance property; CLCircularRegion support for
iOS 7
android plugin

re-add updated android plugin
update google play services
fix android MonitoringRegion
iOS 8 update
permission fix
Merge pull request #44 from maxpli/master

minor updates