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/vim/tasks/main.yml

@@ -0,0 +1,12 @@
+---
+- name: Install vim
+  apt:
+    name: vim-nox
+    state: latest
+# use the `copy` module to copy files to the remote host
+- name: Configure vim
+  copy:
+    src: vimrc
+    dest: /etc/vim/vimrc
+    owner: root
+    group: root