Adds an item to the share menu allowing arbitrary files to be shared via Beam, an NFC-based protocol introduced in Android 4.1. To use it, tap the share button on any file in any file manager, then tap two devices together, then tap the screen again. Only the sender needs to have the app installed, but both devices need NFC. The actual file transfer goes over WiFi. A proprietary Google Admob binary was removed before building.