[dist] Version bump. 0.6.3
[dist] Version bump. 0.6.3

olalonde/nconf,bryce-gibson/nconf,ChristianMurphy/nconf,philip1986/nconf,NickHeiner/nconf,Dependencies/nconf,imjerrybao/nconf,HansHammel/nconf,remy/nconf,indexzero/nconf