feat: make ansible 2.x compatible

Merge branch 'master' of https://github.com/zeelax/ansible-hosts into develop

closes #4

Author: franklinkim

.travis.yml

@@ -11,4 +11,4 @@ script:
   - echo localhost > inventory
   - ln -s ansible-hosts ../franklinkim.hosts
   - ansible-playbook --syntax-check -i inventory tests/main.yml
-  - ansible-playbook -i inventory tests/main.yml --connection=local --sudo -vvvv
+  - ansible-playbook -i inventory tests/main.yml --connection=local --become -vvvv

tasks/manage.yml

@@ -14,4 +14,4 @@
     line: "{{ item.ip }} {{ item.domain }} # ansible"
     regexp: "^{{ item.ip }} {{ item.domain }} # ansible"
     insertafter: EOF
-  with_items: hosts
+  with_items: "{{ hosts }}"