Added class and os alternates

.oh-my-zsh/plugins/forklift/README.md

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+## forklift
+
+Plugin for ForkLift, an FTP application for OS X.
+
+### Requirements
+
+* [ForkLift](https://binarynights.com/)
+
+### Usage
+
+<code>fl [*file_or_folder*]</code>
+
+* If `fl` is called without arguments then the current folder is opened in ForkLift. This is equivalent to `fl .`.
+
+* If `fl` is called with a directory as the argument, then that directory is opened in ForkLift. If called with a non-directory file as the argument, then the file's parent directory is opened.