Update README regarding google analytics version.
Update README regarding google analytics version.

New version of google analytics SDK (v3.01) 
breaks AnalyticsKit
brightredchilli/AnalyticsKit,busybusy/AnalyticsKit,busybusy/AnalyticsKit,busybusy/AnalyticsKit,cabosoft/AnalyticsKit,twobitlabs/AnalyticsKit,twobitlabs/AnalyticsKit,brightredchilli/AnalyticsKit,twobitlabs/AnalyticsKit,busybusy/AnalyticsKit