     helpMessage: "In which types of files we should search for resource usage. Default is 'm mm swift xib storyboard'")
 cli.addOption(fileExtOption)
 
+let versionOption = BoolOption(longFlag: "version", helpMessage: "Print version.")
+cli.addOption(versionOption)
+
 let helpOption = BoolOption(shortFlag: "h", longFlag: "help",
-                      helpMessage: "Prints this help message.")
+                      helpMessage: "Print this help message.")
 cli.addOption(helpOption)
 
 do {

if helpOption.value {
    cli.printUsage()
    exit(EX_OK)
}



import Rainbow
import FengNiaoKit
import PathKit

let appVersion = "0.1.2"

#if os(Linux)
let EX_OK: Int32 = 0
