Added pillar example

README.md

-nginx
-=====

README.rst

+nginx
+=====
+
+Install nginx

init.sls

 include:
   - nginx.common
   - nginx.users
-  # To install from a package
-  # If you want to install from source
-  # simply replace this comment
+{% if pillar.get('nginx', {}).get('install_from_source') %}
+  - nginx.source
+{% else %}
   - nginx.package
+{% endif -%}
 

pillar.example

+nginx:
+  install_from_source: True
+  with_luajit: False
+  with_openresty: True
+  modules:
+    headers-more: 
+      source: http://github.com/agentzh/headers-more-nginx-module/tarball/v0.21
+      source_hash: sha1=DAFJAKSDFJAKDFJ