Add version to CLI (#144)

Sources/plank/Cli.swift

@@ -24,6 +24,7 @@ enum FlagOptions: String {
     case indent = "indent"
     case lang = "lang"
     case help = "help"
+    case version = "version"
 
     func needsArgument() -> Bool {
         switch self {
@@ -36,6 +37,7 @@ enum FlagOptions: String {
         case .onlyRuntime: return false
         case .lang: return true
         case .help: return false
+        case .version: return false
         case .javaPackageName: return true
         }
     }
@@ -52,6 +54,7 @@ extension FlagOptions: HelpCommandOutput {
             "    --\(FlagOptions.indent.rawValue) - Define a custom indentation",
             "    --\(FlagOptions.lang.rawValue) - Comma separated list of target language(s) for generating code. Default: \"objc\"",
             "    --\(FlagOptions.help.rawValue) - Show this text and exit",
+            "    --\(FlagOptions.version.rawValue) - Show version number and exit",
             "",
             "    Objective-C:",
             "    --\(FlagOptions.objectiveCClassPrefix.rawValue) - The prefix to add to all generated class names",
@@ -128,6 +131,11 @@ func handleGenerateCommand(withArguments arguments: [String]) {
         handleHelpCommand()
         return
     }
+
+    if flags[.version] != nil{
+	    handleVersionCommand()
+	    return
+    }
 
     let output_dir = flags[.outputDirectory] ?? ""
 
@@ -214,3 +222,8 @@ func handleHelpCommand() {
 
     print(helpDocs)
 }
+
+
+func handleVersionCommand() {
+    print(PLANK_VERSION)
+}

Sources/plank/Version.swift

@@ -0,0 +1 @@
+let PLANK_VERSION = "1.4.1"

docs/_posts/2018-03-10-command-line-reference.md

@@ -19,7 +19,9 @@ plank [options] file1 file2 ...
 | `indent` | Define a custom indentation width. Default "4" for Objective-C, Java and "2" for Flow |
 | `no_recursive` | Only generates files passed in on the commandline (i.e. for `pin.json` only generate `Pin.m` and `Pin.h`) |
 | `only_runtime` | Only generates runtime files and exits |
+| `no_runtime` | Avoids generating runtime files |
 | `help` | Displays usage documentation |
+| `version` | Displays version |
 
 ## Objective-C