The current directory changes for the entire process after calling this plugin

[revolter]

Currently, if you're using the directory option, after calling a lint method on this plugin, the current directory remains changed to the specified value, even for other plugins.

It is caused by this line:

danger-ruby-swiftlint/ext/swiftlint/swiftlint.rb

Line 12 in d1ac19b

Dir.chdir options.delete(:pwd) if options.key? :pwd

A workaround for this is:

current_dir = Dir.pwd()

swiftlint.directory = 'MyDirectory'
swiftlint.lint_files

Dir.chdir(current_dir)

(Moved from ashfurrow/danger-swiftlint#4)