Add tasks for all the new languages

Task/Roman-numerals-Encode/Swift/roman-numerals-encode-1.swift

@@ -0,0 +1,26 @@
+func ator(var n: Int) -> String {
+
+    var result = ""
+
+    for (value, letter) in
+       [( 1000,    "M"),
+        (  900,   "CM"),
+        (  500,    "D"),
+        (  400,   "CD"),
+        (  100,    "C"),
+        (   90,   "XC"),
+        (   50,    "L"),
+        (   40,   "XL"),
+        (   10,    "X"),
+        (    9,   "IX"),
+        (    5,    "V"),
+        (    4,   "IV"),
+        (    1,    "I")]
+    {
+        while n >= value {
+            result += letter
+            n   -= value
+        }
+    }
+    return result
+}

Task/Roman-numerals-Encode/Swift/roman-numerals-encode-2.swift

@@ -0,0 +1 @@
+println(ator(1666)) // MDCLXVI

Task/Roman-numerals-Encode/Swift/roman-numerals-encode-3.swift

@@ -0,0 +1 @@
+print(ator(1666)) // MDCLXVI