Merge pull request #194 from norio-nomura/takes-swiftfile-from-script…

…-input-files

Apply isSwiftFile filter on using scriptInputFiles

Source/swiftlint/LintCommand.swift

@@ -35,7 +35,7 @@ struct LintCommand: CommandType {
                 return .Failure(CommandantError<()>.CommandError())
             } else if options.useScriptInputFiles {
                 return scriptInputFiles().flatMap { paths in
-                    let files = paths.flatMap(File.init)
+                    let files = paths.filter { $0.isSwiftFile() }.flatMap(File.init)
                     return lint(files, configuration: configuration, strict: options.strict)
                 }
             }