Configure travis caching for gradle.
Configure travis caching for gradle.

cketti/okhttp,square/okhttp,cmzy/okhttp,cmzy/okhttp,ze-pequeno/okhttp,ansman/okhttp,yschimke/okhttp,cketti/okhttp,yschimke/okhttp,square/okhttp,ze-pequeno/okhttp,yschimke/okhttp,ze-pequeno/okhttp,square/okhttp,tiarebalbi/okhttp,ansman/okhttp,tiarebalbi/okhttp,ansman/okhttp,tiarebalbi/okhttp,cketti/okhttp