Add Java install step for Homebrew install guide 
Add Java install step for Homebrew install guide 

fix #2438

Closes #2439.

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Reviewed-on: https://github.com/bazelbuild/bazel/pull/2439
PiperOrigin-RevId: 148781010
MOS_MIGRATED_REVID=148781010

davidzchen/bazel,safarmer/bazel,davidzchen/bazel,twitter-forks/bazel,variac/bazel,ulfjack/bazel,dslomov/bazel,spxtr/bazel,meteorcloudy/bazel,snnn/bazel,akira-baruah/bazel,werkt/bazel,meteorcloudy/bazel,bazelbuild/bazel,variac/bazel,bazelbuild/bazel,aehlig/bazel,safarmer/bazel,akira-baruah/bazel,dropbox/bazel,aehlig/bazel,dslomov/bazel,werkt/bazel,Asana/bazel,werkt/bazel,davidzchen/bazel,perezd/bazel,davidzchen/bazel,aehlig/bazel,juhalindfors/bazel-patches,katre/bazel,dslomov/bazel,davidzchen/bazel,damienmg/bazel,dslomov/bazel,cushon/bazel,damienmg/bazel,twitter-forks/bazel,dropbox/bazel,snnn/bazel,davidzchen/bazel,juhalindfors/bazel-patches,akira-baruah/bazel,aehlig/bazel,perezd/bazel,katre/bazel,spxtr/bazel,bazelbuild/bazel,damienmg/bazel,ulfjack/bazel,ulfjack/bazel,damienmg/bazel,dslomov/bazel-windows,akira-baruah/bazel,damienmg/bazel,juhalindfors/bazel-patches,snnn/bazel,ButterflyNetwork/bazel,akira-baruah/bazel,Asana/bazel,safarmer/bazel,twitter-forks/bazel,Asana/bazel,Asana/bazel,snnn/bazel,dropbox/bazel,cushon/bazel,ulfjack/bazel,variac/bazel,bazelbuild/bazel,davidzchen/bazel,spxtr/bazel,variac/bazel,perezd/bazel,meteorcloudy/bazel,dropbox/bazel,werkt/bazel,dslomov/bazel,variac/bazel,katre/bazel,twitter-forks/bazel,werkt/bazel,ButterflyNetwork/bazel,juhalindfors/bazel-patches,safarmer/bazel,spxtr/bazel,variac/bazel,damienmg/bazel,ButterflyNetwork/bazel,juhalindfors/bazel-patches,twitter-forks/bazel,ulfjack/bazel,werkt/bazel,snnn/bazel,dropbox/bazel,twitter-forks/bazel,cushon/bazel,katre/bazel,cushon/bazel,dslomov/bazel-windows,dslomov/bazel-windows,dslomov/bazel,dropbox/bazel,spxtr/bazel,safarmer/bazel,perezd/bazel,cushon/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,dslomov/bazel,snnn/bazel,dslomov/bazel-windows,bazelbuild/bazel,meteorcloudy/bazel,safarmer/bazel,Asana/bazel,aehlig/bazel,katre/bazel,spxtr/bazel,ulfjack/bazel,twitter-forks/bazel,meteorcloudy/bazel,damienmg/bazel,perezd/bazel,variac/bazel,perezd/bazel,ButterflyNetwork/bazel,perezd/bazel,akira-baruah/bazel,ButterflyNetwork/bazel,katre/bazel,bazelbuild/bazel,Asana/bazel,meteorcloudy/bazel,aehlig/bazel,dslomov/bazel-windows,cushon/bazel,ulfjack/bazel,snnn/bazel,aehlig/bazel,dslomov/bazel-windows,Asana/bazel,spxtr/bazel,juhalindfors/bazel-patches,juhalindfors/bazel-patches