adding env vars

.env-dist

@@ -34,6 +34,12 @@ SES_CONFIG_SET=
 # 1: only log messages coming back from SES
 SES_NOTIFICATION_LOG_ONLY=
 
+# s3 bucket for cdn
+AWS_ACCESS_KEY_ID=
+AWS_SECRET_ACCESS_KEY=
+AWS_REGION=
+S3_BUCKET=
+
 # Firefox Accounts OAuth
 # leave FXA_ENABLED empty to disable FXA
 FXA_ENABLED=