Cleanup in src/, adding namespaces, removing php closing tag and general code cleanup

src/Numerics/SquareMatrix.php

@@ -0,0 +1,22 @@
+<?php namespace Moserware\Skills\Numerics;
+
+class SquareMatrix extends Matrix
+{
+    public function __construct()
+    {
+        $allValues = func_get_args();
+        $rows = (int)sqrt(count($allValues));
+        $cols = $rows;
+
+        $matrixData = array();
+        $allValuesIndex = 0;
+
+        for ($currentRow = 0; $currentRow < $rows; $currentRow++) {
+            for ($currentColumn = 0; $currentColumn < $cols; $currentColumn++) {
+                $matrixData[$currentRow][$currentColumn] = $allValues[$allValuesIndex++];
+            }
+        }
+
+        parent::__construct($rows, $cols, $matrixData);
+    }
+}