Document requirement for file command.
Update Capistrano Task example for working in 3.x version
Optionally disable inspecting EXIF for orientation
Ensure required validations accepts subclasses
Locale file for spanish
Fixed incorrect mime-type in README.
Merge pull request #1542 from mauriciopasquier/es-locale

Locale file for spanish
Add a german locale file
Merge pull request #1545 from clemensg/add_german_locale

Add german locale file
Merge pull request #1515 from quainjn/allow_subclassed_validators

Ensure required validations accepts subclasses
Merge pull request #1514 from pbyrne/configure-disable-exif-orientation

Optionally disable inspecting EXIF for orientation
Merge pull request #1510 from nonninz/fix-capistrano-readme-command

Update Capistrano Task example for working in 3.x version
Merge pull request #1505 from boone/doc_file_requirement

Document requirement for file command.
added :preserve_files notes to the README
Merge pull request #1509 from drewcimino/soft-delete-doc

added :preserve_files notes to the README