Add sendEmails util

An util used to send emails to participants regarding the game.

Change-Id: Ibe557ad2888497a883f20841817658478ac6ccdf
diff --git a/utils/composer.json b/utils/composer.json
new file mode 100644
index 0000000..fe40b60
--- /dev/null
+++ b/utils/composer.json
@@ -0,0 +1,5 @@
+{
+    "require": {
+        "mailjet/mailjet-apiv3-php": "^1.5"
+    }
+}