Fix the readme to also have the gradle and other instructions listing 2.x, and reference HEAD-SNAPSHOT version for development at head.
Fix the readme to also have the gradle and other instructions listing 2.x, and reference HEAD-SNAPSHOT version for development at head.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=128736446

google/dagger,ze-pequeno/dagger,ravn/dagger,ronshapiro/dagger,google/dagger,cgruber/dagger,hansonchar/dagger,hansonchar/dagger,ze-pequeno/dagger,ravn/dagger,ze-pequeno/dagger,ronshapiro/dagger,ronshapiro/dagger,cgruber/dagger,google/dagger,ravn/dagger,hansonchar/dagger,dushmis/dagger,AttwellBrian/dagger,dushmis/dagger,ze-pequeno/dagger,google/dagger,cgruber/dagger,AttwellBrian/dagger