More content and playbooks

* more readme.md content
* imported basic roles
* commented said basic roles
* trimmed down playbooks to be understandable
* update requirements.txt deps

roles/ntp/tasks/main.yml

@@ -0,0 +1,24 @@
+---
+- name: "Install ntp"
+  apt:
+    name: ntp
+    state: present
+- name: "Configure ntp"
+  copy:
+    src: ntp.conf
+    dest: /etc/ntp.conf
+    owner: root
+    group: root
+    mode: "644"
+  # notify is going to invoke the "Restart ntp" handler defined in
+  # the roles/ntp/handlers/main.yml file. Basically it says that
+  # you want to restart the ntp service every time the configuratio
+  # changes
+  notify: "Restart ntp"
+# Here you say that you want the NTP service to be restarted as well
+# as enabled on boot.
+- name: "ntp service"
+  service:
+    name: ntp
+    state: restarted
+    enabled: true