test snapshot name beginning with number

app/UI/Validators/SnapshotValidator.php

@@ -47,7 +47,7 @@ class SnapshotValidator extends BaseValidator
             $this->addValidationError('PleaseProvideASnapshotValue');
             return false;
         }
-        else if (!preg_match('/^[A-Za-z]{1}[A-Za-z0-9_]{1}[A-Za-z0-9]/', $data)) {
+        else if (!preg_match('/^[A-Za-z0-9]{1}[A-Za-z0-9_]{1}[A-Za-z0-9]/', $data)) {
             $this->addValidationError('PleaseProvideASnapshotValue');
             return false;
         }