Update osx.rst
Update osx.rst

Changed brew upgrade to brew upgrade --all.
dbrgn/mopidy,swak/mopidy,tkem/mopidy,jodal/mopidy,SuperStarPL/mopidy,ZenithDK/mopidy,quartz55/mopidy,vrs01/mopidy,hkariti/mopidy,swak/mopidy,tkem/mopidy,quartz55/mopidy,tkem/mopidy,SuperStarPL/mopidy,bacontext/mopidy,pacificIT/mopidy,ZenithDK/mopidy,vrs01/mopidy,kingosticks/mopidy,adamcik/mopidy,bencevans/mopidy,mopidy/mopidy,mopidy/mopidy,bacontext/mopidy,diandiankan/mopidy,jodal/mopidy,quartz55/mopidy,mokieyue/mopidy,bencevans/mopidy,ali/mopidy,ZenithDK/mopidy,jcass77/mopidy,hkariti/mopidy,jmarsik/mopidy,diandiankan/mopidy,swak/mopidy,SuperStarPL/mopidy,pacificIT/mopidy,adamcik/mopidy,bencevans/mopidy,swak/mopidy,ali/mopidy,diandiankan/mopidy,dbrgn/mopidy,mokieyue/mopidy,jcass77/mopidy,ZenithDK/mopidy,bencevans/mopidy,bacontext/mopidy,jmarsik/mopidy,ali/mopidy,jodal/mopidy,bacontext/mopidy,mokieyue/mopidy,quartz55/mopidy,mopidy/mopidy,vrs01/mopidy,jmarsik/mopidy,mokieyue/mopidy,tkem/mopidy,jmarsik/mopidy,dbrgn/mopidy,kingosticks/mopidy,kingosticks/mopidy,diandiankan/mopidy,adamcik/mopidy,vrs01/mopidy,ali/mopidy,SuperStarPL/mopidy,dbrgn/mopidy,hkariti/mopidy,hkariti/mopidy,pacificIT/mopidy,jcass77/mopidy,pacificIT/mopidy