Added current version flag

Sources/Ether/Version.swift

@@ -0,0 +1,45 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2017 Caleb Kleveter
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+import Console
+
+public final class Version: Command {
+    public let id = "update"
+
+    public let signature: [Argument] = []
+
+    public let help: [String] = [
+        "Outputs the current version of Ether."
+    ]
+
+    public let console: ConsoleProtocol
+    public let version: String
+
+    public init(console: ConsoleProtocol, version: String) {
+        self.console = console
+        self.version = version
+    }
+
+    public func run(arguments: [String]) throws {
+        console.output("Ether Version: \(version)", style: .info, newLine: true)
+    }
+}

Sources/Executable/main.swift

@@ -24,10 +24,15 @@ import Console
 import Ether
 import libc
 
+// The current version of Ether. This string should be updated with each release.
+let version = "1.5"
 var arguments = CommandLine.arguments
 
-let terminal = Terminal(arguments: arguments)
+if arguments.contains("--version") {
+    arguments.insert("version", at: 1)
+}
 
+let terminal = Terminal(arguments: arguments)
 var iterator = arguments.makeIterator()
 
 guard let executable = iterator.next() else {
@@ -44,7 +49,8 @@ do {
         New(console: terminal),
         Group(id: "version", commands: [
             VersionLatest(console: terminal)
-        ], help: ["For interacting with dependency versions"])
+        ], help: ["For interacting with dependency versions"]),
+        Version(console: terminal, version: version)
     ], arguments: Array(iterator),
     help: [
         "MIT 2017 Caleb Kleveter.",