Google to add ‘buy button’. More announcements at I/O developer conference to follow

Google's I/O developer conference starts this morning in California and we're expecting some pretty big announcements including Android M 6.0, the breaking out of Google+'s Photos app into a standalone entity, new Android Wear hardware, a new Chromecast, and perhaps some news about Google's VR initiative. However, the big news that's broken already is that¬†Google¬†is…