Video support in Grid doc file (#1149)
Video support in Grid doc file (#1149)

* Added doc file for Grid Bid Adapter

* update doc for TheMediaGrid Bid Adapter

* Added video support in Grid doc file

* removing unnecessary front matter

prebid/prebid.github.io,prebid/prebid.github.io,sonobi/prebid.github.io,sonobi/prebid.github.io,prebid/prebid.github.io,sonobi/prebid.github.io