0.8.0

• renamed DefaultInternetObservingStrategy to SocketInternetObservingStrategy class
• added observeInternetConnectivity(InternetObservingStrategy) method to ReactiveNetwork class
• removed DefaultInternetObservingStrategy#ON_CLOSE_SOCKET_ERROR_MSG static field
• added permission annotations
• updated Connectivity class. Now it contains the following fields with getters: state, detailedState, type, subType, available, failover, roaming, typeName, subTypeName, reason, extraInfo (it's wrapped data of NetworkInfo class from Android SDK)
• added Builder to the Connectivity class
• created ConnectivityPredicate class
• methods Func1<Connectivity, Boolean> hasState(final NetworkInfo.State... states) and Func1<Connectivity, Boolean> hasType(final int... types) were moved from Connectivity class to ConnectivityPredicate class
• updated Gradle and Travis configuration
• updated project dependencies