Update readme for #13

Author: dhoeric

README.md

@@ -17,7 +17,21 @@ None
 Role Variables
 --------------
 
-None
+Available variables are listed below, along with default values:
+
+```
+# The defaults provided by this role are specific to each distribution.
+url: 'amd64'
+```
+
+For installion in [Raspbian](https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-manual-agent-install.html#agent-install-raspbianjessie), please find the activation code and id before using this role
+```
+url: 'arm'
+aws_ssm_activation_code:
+aws_ssm_activation_id:
+aws_ssm_ec2_region: "{{ec2_region}}"
+```
+
 
 Dependencies
 ------------

meta/main.yml

@@ -1,7 +1,6 @@
 galaxy_info:
   author: Eric Ho
   description: Install AWS EC2 Systems Manager (SSM) agent
-  company:
 
   # If the issue tracker for your role is not on github, uncomment the
   # next line and provide a value