chenxixian/devdocs @ 97de950d607f035f8fc458ba7269a82d23b0fc9f

kopia lustrzana https://github.com/freeCodeCamp/devdocs

Andy Holmes 51cb8984eb fix: replace calls to `File.exists?` with `File.exist?`		3 lat temu
..
abstract_store.rb	456c4cb811 Add Store#size	11 lat temu
file_store.rb	51cb8984eb fix: replace calls to `File.exists?` with `File.exist?`	3 lat temu
null_store.rb	456c4cb811 Add Store#size	11 lat temu