Fixes #5498
Fixes #5498

Updated data_reader.rb comments to more accurately reflect read() and read_data_to() functionality.
chrisfinazzo/jekyll,gencer/jekyll,Strangehill/jekyll,fulldecent/jekyll,tillgrallert/jekyll,xiebinhqy/jklly_china,gencer/jekyll,x-way/jekyll,rlugojr/jekyll,jaybe-jekyll/jekyll,Strangehill/jekyll,Strangehill/jekyll,yhironaka/yhironaka.github.io,rasa2011/rasa2011.github.io,alex-kovac/jekyll,xiebinhqy/jklly_china,fulldecent/jekyll,tomjohnson1492/jekyll,getandpost/jekyll.github.io,Strangehill/jekyll,tillgrallert/jekyll,alex-kovac/jekyll,tomjohnson1492/jekyll,tomjohnson1492/jekyll,fulldecent/jekyll,xiebinhqy/jklly_china,tillgrallert/jekyll,tomjohnson1492/jekyll,chrisfinazzo/jekyll,x-way/jekyll,jekyll/jekyll,alex-kovac/jekyll,x-way/jekyll,Strangehill/jekyll,jekyll/jekyll,getandpost/jekyll.github.io,jekyll/jekyll,alex-kovac/jekyll,ryanshaw/jekyll,jaybe-jekyll/jekyll,rlugojr/jekyll,fulldecent/jekyll,rlugojr/jekyll,xiebinhqy/jklly_china,ryanshaw/jekyll,jaybe-jekyll/jekyll,chrisfinazzo/jekyll,tomjohnson1492/jekyll,tillgrallert/jekyll,jaybe-jekyll/jekyll,rasa2011/rasa2011.github.io,ryanshaw/jekyll,x-way/jekyll,jekyll/jekyll,rasa2011/rasa2011.github.io,getandpost/jekyll.github.io,gencer/jekyll,gencer/jekyll,ryanshaw/jekyll,alex-kovac/jekyll,tillgrallert/jekyll,chrisfinazzo/jekyll,rlugojr/jekyll,gencer/jekyll