bazel: update README for OS X (#1444)
bazel: update README for OS X (#1444)


dnoe/envoy,envoyproxy/envoy,amalgam8/envoy,istio/envoy,envoyproxy/envoy,lyft/envoy,lizan/envoy,amalgam8/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,istio/envoy,envoyproxy/envoy,istio/envoy,tdmackey/envoy,istio/envoy,lyft/envoy,rlazarus/envoy,sebrandon1/envoy,jrajahalme/envoy,dnoe/envoy,rlazarus/envoy,eklitzke/envoy,fengli79/envoy,sebrandon1/envoy,lizan/envoy,envoyproxy/envoy,istio/envoy,jrajahalme/envoy,eklitzke/envoy,sebrandon1/envoy,envoyproxy/envoy-wasm,istio/envoy,eklitzke/envoy,amalgam8/envoy,lyft/envoy,craffert0/envoy,istio/envoy,envoyproxy/envoy-wasm,craffert0/envoy,envoyproxy/envoy,dnoe/envoy,dnoe/envoy,tdmackey/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,lyft/envoy,amalgam8/envoy,jrajahalme/envoy,sebrandon1/envoy,eklitzke/envoy,fengli79/envoy,tdmackey/envoy,tdmackey/envoy,eklitzke/envoy,lizan/envoy,sebrandon1/envoy,lizan/envoy,eklitzke/envoy,fengli79/envoy,rlazarus/envoy,craffert0/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy-wasm,lyft/envoy,lizan/envoy,lyft/envoy,rlazarus/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,jrajahalme/envoy,jrajahalme/envoy,envoyproxy/envoy,craffert0/envoy,lizan/envoy,dnoe/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,fengli79/envoy