2.0.0

• removed withPingUrl(url) method
• removed withPingTimeout() method
• removed withoutPing() method
• removed withoutWifiAccessPointsScan() method
• removed Otto dependency (now, it's available only for unit tests)
• removed example-disabling-ping-and-wifi-scan app sample
• removed example-ping-customization app sample
• removed NetworkHelper class and moved its method to specific classes with changed scope
• moved permissions to Manifest of library
• disabled WiFi scan by default
• disabled Internet connection check by default
• added BusWrapper, which is abstraction for Event Bus required by NetworkEvents object
• added example-greenrobot-bus app sample
• added enableWifiScan() method
• added enableInternetCheck() method
• added getWifiScanResults() method in WifiSignalStrengthChanged event
• added getMobileNetworkType() method in ConnectivityChanged event
• added JavaDoc at: http://pwittchen.github.io/NetworkEvents/
• updated existing sample applications
• updated documentation in README.md and library code