Make the conf/slaves as a gitignore file
Merge pull request #507 from PasaLab/TACHYON-207

[TACHYON-207] Make the conf/slaves as a gitignore file
Simple fix for typo from tachyon.worker.network.netty.buffer.recieve to tachyon.worker.network.netty.buffer.receive
Merge pull request #508 from hsaputra/fix_typo_netty_config_receive

Simple fix for tachyon.worker.network.netty.buffer.recieve