docs: add instructions to install plugin dependencies, fixes #2136
docs: add instructions to install plugin dependencies, fixes #2136

madmouser1/beets,shamangeorge/beets,mosesfistos1/beetbox,jackwilsdon/beets,xsteadfastx/beets,artemutin/beets,lengtche/beets,sampsyo/beets,lengtche/beets,xsteadfastx/beets,MyTunesFreeMusic/privacy-policy,shamangeorge/beets,ibmibmibm/beets,lengtche/beets,shamangeorge/beets,beetbox/beets,artemutin/beets,jackwilsdon/beets,jackwilsdon/beets,mosesfistos1/beetbox,sampsyo/beets,beetbox/beets,madmouser1/beets,SusannaMaria/beets,mosesfistos1/beetbox,Kraymer/beets,artemutin/beets,pkess/beets,MyTunesFreeMusic/privacy-policy,Kraymer/beets,Kraymer/beets,madmouser1/beets,Kraymer/beets,shamangeorge/beets,diego-plan9/beets,lengtche/beets,pkess/beets,sampsyo/beets,xsteadfastx/beets,ibmibmibm/beets,mosesfistos1/beetbox,xsteadfastx/beets,diego-plan9/beets,SusannaMaria/beets,sampsyo/beets,SusannaMaria/beets,artemutin/beets,madmouser1/beets,pkess/beets,ibmibmibm/beets,SusannaMaria/beets,pkess/beets,MyTunesFreeMusic/privacy-policy,beetbox/beets,MyTunesFreeMusic/privacy-policy,diego-plan9/beets,beetbox/beets,ibmibmibm/beets,diego-plan9/beets,jackwilsdon/beets