According to a report from TechCrunch, on June 20, Facebook will unveil Instagram’s new video feature at a press event. Finally, someone has invented a way to shoot, edit and share short, artsy videos on social media. We’ve heard through the grapeVINE that Facebook (who now owns Instagram) is always looking to invent new social media conventions, like their latest creation, something called “hashtags” that were rolled out last week. What will they think of next? …