modified 'has_secure_password.rb'. delete comments.
add 'has_secure_password.rb' two version.
delete sss
Merge pull request #5 from quad9/has_secure_password

has_secure_password branchへquad9からの変更をプルリクする
has_secure_password.rb modifiy
Merge pull request #1 from effe1/has_secure_password

Has secure password
renamed file has_secure_password. and one file delete.
Merge pull request #6 from quad9/has_secure_password

about Has secure password
create new file 'explain by japanese.'
Merge pull request #7 from quad9/has_secure_password

Create new file 'explain by japanese.'
create file 'bcrypt.md'
Merge pull request #2 from effe1/has_secure_password

Has secure password
add file 'csv.md'