Disable non-JDK8 builds on Travis
Disable non-JDK8 builds on Travis

jamierocks/SpongeAPI,Kiskae/SpongeAPI,AlphaModder/SpongeAPI,ryantheleach/SpongeAPI,SpongePowered/SpongeAPI,jamierocks/SpongeAPI,DDoS/SpongeAPI,AlphaModder/SpongeAPI,SpongePowered/SpongeAPI,boomboompower/SpongeAPI,ryantheleach/SpongeAPI,kashike/SpongeAPI,JBYoshi/SpongeAPI,JBYoshi/SpongeAPI,SpongePowered/SpongeAPI,modwizcode/SpongeAPI,Kiskae/SpongeAPI,DDoS/SpongeAPI,boomboompower/SpongeAPI,kashike/SpongeAPI,modwizcode/SpongeAPI