Save $20 on the Roku Streaming Stick+ 4K, get 3 months of CBS All Access for free

Want an easy way to stream 4K? The Roku Streaming Stick+ is an ultra-portable way to stream your favorite movies and TV shows in glorious 4K and it's now on sale for just $49.99, or $50 off its list price at Walmart. Normally going for $69.99, the Roku device…