Add tasks for all the new languages

Task/Ordered-words/Swift/ordered-words.swift

@@ -0,0 +1,28 @@
+import Foundation
+
+guard
+    let url =  NSURL(string: "http://www.puzzlers.org/pub/wordlists/unixdict.txt"),
+    let input = try? NSString(contentsOfURL: url,encoding: NSUTF8StringEncoding) as String
+    else { exit(EXIT_FAILURE) }
+
+let words = input.componentsSeparatedByCharactersInSet(NSCharacterSet.newlineCharacterSet())
+let group: ([Int: [String]], String) -> [Int: [String]] = {
+    var d = $0; let g = d[$1.characters.count] ?? []
+    d[$1.characters.count] = g + [$1]
+    return d
+}
+let ordered: ([String], String) -> [String] = {
+    guard String($1.characters.sort()) == $1 else { return $0 }
+    return $0 + [$1]
+}
+
+let groups = words
+    .reduce([String](), combine: ordered)
+    .reduce([Int: [String]](), combine: group)
+
+guard
+    let maxLength = groups.keys.maxElement(),
+    let maxLengthGroup = groups[maxLength]
+    else { exit(EXIT_FAILURE) }
+
+maxLengthGroup.forEach { print($0) }