add cocoa.vim & swift.vim

sources_non_forked/swift.vim/README.md

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+# Swift.vim
+
+Syntax and indent files for [Swift](https://developer.apple.com/swift/)
+
+If you don't have a preferred installation method check out
+[vim-plug](https://github.com/junegunn/vim-plug).
+
+## Examples
+
+![](https://raw.githubusercontent.com/keith/swift.vim/master/screenshots/screen.png)
+![](https://raw.githubusercontent.com/keith/swift.vim/master/screenshots/screen2.png)
+
+## [Syntastic](https://github.com/scrooloose/syntastic/) Integration
+
+swift.vim can show errors inline from
+[swift package manager](https://github.com/apple/swift-package-manager/)
+or from [swiftlint](https://github.com/realm/SwiftLint) using
+[syntastic](https://github.com/scrooloose/syntastic/).
+
+![](https://raw.githubusercontent.com/keith/swift.vim/master/screenshots/screen3.png)
+
+### Usage
+
+- Install [syntastic](https://github.com/scrooloose/syntastic/)
+
+- swiftpm integration will be automatically enabled if you're running vim
+from a directory containing a `Package.swift` file.
+
+- SwiftLint integration will be automatically enabled if you have
+SwiftLint installed and if you're running vim from a directory
+containing a `.swiftlint.yml` file.
+
+- To enable both at once add this to your vimrc:
+
+```vim
+let g:syntastic_swift_checkers = ['swiftpm', 'swiftlint']
+```