docs: Update dependency list, as pyalsaaudio is not required for OS X
docs: Update dependency list, as pyalsaaudio is not required for OS X

bencevans/mopidy,hkariti/mopidy,dbrgn/mopidy,hkariti/mopidy,diandiankan/mopidy,ZenithDK/mopidy,mopidy/mopidy,glogiotatidis/mopidy,glogiotatidis/mopidy,woutervanwijk/mopidy,jcass77/mopidy,pacificIT/mopidy,kingosticks/mopidy,tkem/mopidy,bacontext/mopidy,adamcik/mopidy,tkem/mopidy,kingosticks/mopidy,SuperStarPL/mopidy,dbrgn/mopidy,mopidy/mopidy,jodal/mopidy,priestd09/mopidy,bacontext/mopidy,swak/mopidy,jodal/mopidy,ali/mopidy,hkariti/mopidy,priestd09/mopidy,pacificIT/mopidy,dbrgn/mopidy,kingosticks/mopidy,bacontext/mopidy,mokieyue/mopidy,rawdlite/mopidy,bencevans/mopidy,quartz55/mopidy,swak/mopidy,woutervanwijk/mopidy,swak/mopidy,ali/mopidy,jcass77/mopidy,jmarsik/mopidy,priestd09/mopidy,pacificIT/mopidy,pacificIT/mopidy,mokieyue/mopidy,adamcik/mopidy,jmarsik/mopidy,rawdlite/mopidy,jmarsik/mopidy,ali/mopidy,vrs01/mopidy,diandiankan/mopidy,jodal/mopidy,rawdlite/mopidy,quartz55/mopidy,liamw9534/mopidy,rawdlite/mopidy,jcass77/mopidy,SuperStarPL/mopidy,SuperStarPL/mopidy,swak/mopidy,vrs01/mopidy,mokieyue/mopidy,tkem/mopidy,abarisain/mopidy,ZenithDK/mopidy,vrs01/mopidy,SuperStarPL/mopidy,mopidy/mopidy,dbrgn/mopidy,adamcik/mopidy,vrs01/mopidy,ZenithDK/mopidy,glogiotatidis/mopidy,diandiankan/mopidy,ZenithDK/mopidy,tkem/mopidy,mokieyue/mopidy,ali/mopidy,hkariti/mopidy,quartz55/mopidy,bencevans/mopidy,diandiankan/mopidy,glogiotatidis/mopidy,bencevans/mopidy,abarisain/mopidy,bacontext/mopidy,quartz55/mopidy,liamw9534/mopidy,jmarsik/mopidy