chenxixian/devdocs @ 33fc830ea510aaf2867368ee0e01b0a18d1519f8

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