Changed modifiers and added function(s).
Changed device variable to readonly (equivalent of Java's final-modifier) to prevent accidental change to the object.
Added GetFilesAndFolders(string) function. Returns a List<String> containing all files and folders in the specified directory.
See documentation for details.

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Changed method return type from List<string> to Dictionary<string, ListingType> to easily determine whether the file is a file or directory.

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Changed method return type from List<string> to Dictionary<string, ListingType> to easily determine whether the file is a file or directory.

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Merge pull request #18 from Beatsleigher/master

Add Getter for Files and Directories from location