added notes about RPM install

Author: michaelwittig

README.md

@@ -37,6 +37,28 @@ A picture is worth a thousand words:
 
 ## How to integrate this system into your environment
 
+### Install via RPM
+
+> Check the [releases](https://github.com/widdix/aws-ec2-ssh/releases) and replace `1.1.0` with the latest released version.
+
+1. Upload your public SSH key to IAM: 
+ 1. Open the Users section in the [IAM Management Console](https://console.aws.amazon.com/iam/home#users)
+ 2. Click the row with your user
+ 3. Select the **Security Credentials** tab
+ 4. Click the **Upload SSH public key** button at the bottom of the page
+ 5. Paste your public SSH key into the text-area and click the **Upload SSH public key** button to save
+2. Attach the IAM permissions defined in `iam_ssh_policy.json` to the EC2 instances (by creating an IAM role and an Instance Profile)
+3. Install the RPM: `rpm -i ttps://s3-eu-west-1.amazonaws.com/widdix-aws-ec2-ssh-releases-eu-west-1/aws-ec2-ssh-1.1.0-1.el7.centos.noarch.rpm`
+4. The configuration file is placed into `/etc/aws-ec2-ssh.conf`
+5. Install a cronjob to sync the IAM users
+```
+echo "*/10 * * * * root /usr/bin/import_users.sh" > /etc/cron.d/import_users
+chmod 0644 /etc/cron.d/import_users
+/usr/bin/import_users.sh
+```
+
+### Install via install.sh script
+
 1. Upload your public SSH key to IAM: 
  1. Open the Users section in the [IAM Management Console](https://console.aws.amazon.com/iam/home#users)
  2. Click the row with your user

aws-ec2-ssh.spec

@@ -34,7 +34,6 @@ Use your IAM user's public SSH key to get access via SSH to an EC2 instance.
 %install
 rm -rf ${RPM_BUILD_ROOT}
 mkdir -p ${RPM_BUILD_ROOT}%{_bindir}
-mkdir -p ${RPM_BUILD_ROOT}/etc/sysconfig
 install -m 755 import_users.sh ${RPM_BUILD_ROOT}%{_bindir}
 install -m 755 authorized_keys_command.sh ${RPM_BUILD_ROOT}%{_bindir}
 install -m 755 aws-ec2-ssh.conf ${RPM_BUILD_ROOT}/etc/aws-ec2-ssh.conf