added is_travis.sh

is_travis.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2016-01-30 11:09:23 +0000 (Sat, 30 Jan 2016)
+#
+#  https://github.com/harisekhon
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback
+#
+#  http://www.linkedin.com/in/harisekhon
+#
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+if [ -n "${TRAVIS:-}" ]; then
+    exit 0
+else
+    exit 1
+fi