Pass exclusives up in WithLegacyResources.
Add a jvm_app target to pingpong to work around issues/160
Merge pull request #159 from wfarner/wfarner/resources_exclusives

Pass exclusives up in WithLegacyResources.
Merge pull request #161 from wfarner/wfarner/pingpong_app_target

Add a jvm_app target to pingpong example to work around issues/160
Add a TODO explaining use of app target in pingpong, update README.
Merge pull request #162 from wfarner/wfarner/pingpong_todo

Add a TODO explaining use of app target in pingpong, update README.
Merge remote-tracking branch 'twitter/master'