Fixes #965 - Ignore files that don't end in .php

This ignores any files in Migrations that do not end in .php.
It causes problems when scripts, or data, or documentation is
left in the Migrations directory, and the migration task assumes
that they are PHP Classes and crashes.

Signed-Off-By: Rob Thomas <[email protected]>

Author: xrobau

app/sprinkles/core/src/Database/Migrator/MigrationLocator.php

@@ -54,7 +54,11 @@ public function getMigrations()
 
         $migrations = [];
         foreach ($migrationFiles as $migrationFile) {
-            $migrations[] = $this->getMigrationDetails($migrationFile);
+            // Note that PSR4 insists that all php files must end in PHP, so ignore all
+            // files that don't end in PHP.
+            if (preg_match('/php$/', $migrationFile)) {
+                $migrations[] = $this->getMigrationDetails($migrationFile);
+            }
         }
 
         return $migrations;