Merge pull request JohnSundell#37 from JohnSundell/swift4-package-des…

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Use Swift 4 version of the Package Description API

README: Add BuddyBuild, Marathon & Swift version badges

Merge pull request JohnSundell#24 from artemnovichkov/master

Add copy function for item

Merge pull request JohnSundell#21 from clayellis/master

Move hidden folder contents

Merge pull request JohnSundell#19 from JohnSundell/create-file-with-s…

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Add API to create a file with string content

Merge pull request JohnSundell#16 from JohnSundell/item-modified-date

FileSystem.Item: Add modifiedDate property

Merge pull request JohnSundell#11 from yageek/feature/currentFolder

Add syntactic sugar to reach the current folder.

Add APIs for checking whether a folder contains a given file or folder

It’s always been possible to check if a file exists using try?, but that
looks quite ugly, so let’s hide that ugliness behind a nice looking API :)

Merge pull request JohnSundell#8 from pixyzehn/fix-create-file-at-pat…

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Fix create file at path method

Support referencing a parent in a path using “../“

Files now correctly handles paths that contains parent references, by expanding
those references into absolute paths.

So ‘../file’ is expanded to ‘<currentFolderParent>/file’.