bump version to 0.1.4
bump version to 0.1.5
prompt for domain name to write robots.txt with sitemap url
add robots.txt template
Merge branch 'hotfix/0.1.5'

* hotfix/0.1.5:
  add robots.txt template
  prompt for domain name to write robots.txt with sitemap url
  bump version to 0.1.5
  bump version to 0.1.4