[doc] Updated code samples for GitHub flavored markdown with Javascript
[doc] Updated code samples for GitHub flavored markdown with Javascript

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