Add error checking for get hoverfly script, remove hardcoded version, get latest release version

Author: tommysitu

get_hoverfly.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+HOVERFLY_VERSION=$(curl -s https://api.github.com/repos/spectolabs/hoverfly/releases/latest | grep tag_name | sed -n 's/.*"tag_name": "\(.*\)",/\1/p')
+if [[ $?  == 1 ]]; then
+    error_exit "Failed to get latest release version"
+fi
+
+HOVERFLY_DOWNLOAD_URL=https://github.com/SpectoLabs/hoverfly/releases/download/${HOVERFLY_VERSION}
+
+
+# Download distribution package for Linux
+machine_type=$(uname -m)
+if [[ ${machine_type} == "x86_64" ]]; then
+    asset_name=hoverfly_bundle_linux_amd64.zip
+else
+    asset_name=hoverfly_bundle_linux_386.zip
+fi
+
+wget -O /tmp/hoverfly.zip ${HOVERFLY_DOWNLOAD_URL}/${asset_name}
+if [[ $?  == 1 ]]; then
+    error_exit "Failed to download hoverfly release package"
+fi
+
+# Unzip and copy to PATH
+unzip -d /tmp/hoverfly /tmp/hoverfly.zip
+sudo cp /tmp/hoverfly/hoverfly /usr/local/bin/
+sudo cp /tmp/hoverfly/hoverctl /usr/local/bin/
+
+
+# An error exit function
+function error_exit
+{
+	echo "$1" 1>&2
+	exit 1
+}