Add README.md template for Ansigenome

This template will be used to generate README.md file for each role
using Ansigenome tool, which will combine data about the role itself
with custom synopsis and usage information.
Update meta information in all roles

This patch updates 'meta/main.yml' files in all roles to include missing
or custom information for Ansible Galaxy service and Ansigenome tool.
Update CHANGELOG.md
Merge pull request #167 from drybjed/role_meta_update

Preparation for README files in all roles