added setup/install_homebrew.sh

setup/install_homebrew.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+#
+#  Author: Hari Sekhon
+#  Date: 2019-09-12
+#
+#  https://github.com/harisekhon/devops-bash-tools
+#
+#  License: see accompanying LICENSE file
+#
+#  https://www.linkedin.com/in/harisekhon
+#
+
+# Install Homebrew on Mac OS X
+
+/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"