Added install script

Author: Michel Casabianca

install

@@ -0,0 +1,79 @@
+#!/bin/sh
+#
+# Installation script for Unix platforms. To run installation, type :
+#
+# $ sh -c "$(curl https://github.com/intercloud/gobinsec/releases/latest/download/install)"
+#
+# or (if you don't have curl installed):
+#
+# $ sh -c "$(wget -O - https://github.com/intercloud/gobinsec/releases/latest/download/install)"
+
+set -e
+
+NAME="gobinsec"
+
+# get OS and ARCH and build binary name
+os=`uname | tr '[:upper:]' '[:lower:]'`
+arch=`uname -m`
+
+if [ "$arch" = "i386" ]; then
+    arch="386"
+elif [ "$arch" = "x86_64" ]; then
+    arch="amd64"
+fi
+
+echo "os: ${os}"
+echo "arch: ${arch}"
+
+binary="${NAME}-${os}-${arch}"
+
+# set default installation directory
+if [ -d "/opt/local/bin" ]
+then
+    DEFAULT_DIR="/opt/local/bin"
+elif [ -d "/opt/bin" ]
+then
+    DEFAULT_DIR="/opt/bin"
+elif [ -d "/usr/local/bin" ]
+then
+    DEFAULT_DIR="/usr/local/bin"
+elif [ -d "/usr/bin" ]
+then
+    DEFAULT_DIR="/usr/bin"
+else
+    DEFAULT_DIR="/bin"
+fi
+
+# select command to download binary
+if hash curl 2>/dev/null
+then
+    command="curl -o"
+elif hash wget 2>/dev/null
+then
+    command="wget -O"
+else
+    echo "You must install curl or wget to run this installation script"
+    exit 1
+fi
+
+# download binary in /tmp/${NAME} and make it executable
+${command} /tmp/${NAME} https://github.com/intercloud/${NAME}/releases/latest/download/${binary}
+chmod +x /tmp/${NAME}
+
+# prompt for installation directory
+read -p "Installation directory [${DEFAULT_DIR}]? " directory
+if [ -z "$directory" ]
+then
+    directory=${DEFAULT_DIR}
+fi
+
+# copy binary to installation directory
+if [ -w "${directory}" ]
+then
+    mv /tmp/${NAME} ${directory}
+else
+    sudo mv /tmp/${NAME} ${directory}
+    sudo chown root: ${directory}/${NAME}
+fi
+
+echo "${NAME} installed in '${directory}' directory"