Source: Ritu Manoj Jethani / Shutterstock.com Vivint Smart Home (NYSE:VVNT) is jumping more than 32% today after NRG Energy (NYSE:NRG) agreed to buy the company for $2.8 billion in cash. The total value of the deal, including Vivint’s debt, is $5.2 billion. What’s more, the price is a 33% premium to Vivint’s closing price on…