Add in some licence information

LICENCE

@@ -0,0 +1,7 @@
+SQL style guide (c) by Simon Holywell <https://www.simonholywell.com/>
+
+SQL style guide is licensed under a
+Creative Commons Attribution-ShareAlike 4.0 International License.
+
+You should have received a copy of the license along with this
+work. If not, see <http://creativecommons.org/licenses/by-sa/4.0/>. 

_includes/foot.html

@@ -1,3 +1,7 @@
 <footer class="foot">
     <p>&copy; Copyright Simon Holywell 2015</p>
+    
+    <p>
+        <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons Licence" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">SQL style guide</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="https://www.simonholywell.com" property="cc:attributionName" rel="cc:attributionURL">Simon Holywell</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.<br />Based on a work at <a xmlns:dct="http://purl.org/dc/terms/" href="http://www.sqlstyle.guide" rel="dct:source">http://www.sqlstyle.guide</a>.
+    </p>
 </footer>

_includes/head.html

@@ -4,5 +4,8 @@
 <header class="top">
     <div class="wrap">
         <h1>SQL Style Guide</h1>
+        <p class="author">by <a href="https://www.simonholywell.com">Simon Holywell</a></p>
+        <p class="twitter"><a href="https://twitter.com/share" class="twitter-share-button" data-url="http://www.sqlstyle.guide" data-text="SQL style guide by @treffynnon" data-size="large" data-dnt="true">Tweet</a>
+            <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></p>
     </div>
 </header>

_includes/sqlstyle.guide.md

@@ -12,9 +12,13 @@ easier. This guide is a little more opinionated in some areas and in others a
 little more relaxed. It is certainly more succinct where [Celko's book][celko]
 contains anecdotes and reasoning behind each rule as thoughtful prose.
 
-You can easily include this guide in [Markdown format][dl-md] as a part of a
+It is easy to include this guide in [Markdown format][dl-md] as a part of a
 project's code base or reference it here for anyone on the project to freely
-read—much harder with a physical book!
+read—much harder with a physical book
+
+SQL style guide by [Simon Holywell][simon] is licensed under a [Creative Commons
+Attribution-ShareAlike 4.0 International License][licence].
+Based on a work at [http://www.sqlstyle.guide][self].
 
 ## General
 
@@ -44,8 +48,16 @@ read—much harder with a physical book!
   structures.
 
 ```sql
-SELECT first_name
-  FROM staff;
+SELECT file_hash,  -- stored ssdeep hash
+  FROM file_system
+ WHERE file_name = '.vimrc';
+```
+```sql
+/* Updating the file record after writing to the file */
+UPDATE file_system
+   SET file_modified_date = '1980-02-22 13:19:01.00000',
+       file_size = 209732
+ WHERE file_name = '.vimrc';
 ```
 
 ## Naming conventions
@@ -206,6 +218,18 @@ Keeping all the keywords aligned to the righthand side and the values left align
 creates a uniform gap down the middle of query. It makes it much easier to scan
 the query definition over quickly too.
 
+```sql
+INSERT INTO albums (title, release_date, recording_date)
+VALUES ('Charcoal Lane', '1990-01-01 01:01:01.00000', '1990-01-01 01:01:01.00000'),
+       ('The New Danger', '2008-01-01 01:01:01.00000', '1990-01-01 01:01:01.00000');
+```
+
+```sql
+UPDATE albums
+   SET release_date = '1990-01-01 01:01:01.00000'
+ WHERE title = 'The New Danger';
+```
+
 ```sql
 SELECT a.title,
        a.release_date, a.recording_date, a.production_date -- grouped dates together
@@ -1225,6 +1249,8 @@ ZEROFILL
 ZONE
 ```
 
+[simon]: https://www.simonholywell.com/
+    "SimonHolywell.com"
 [issue]: #
 [fork]: #
 [pull]: #
@@ -1239,4 +1265,8 @@ ZONE
 [reserved-keywords]: #reserved-keyword-reference
     "Reserved keyword reference" 
 [eav]: https://en.wikipedia.org/wiki/Entity%E2%80%93attribute%E2%80%93value_model
-    "Wikipedia: Entity–attribute–value model"
+    "Wikipedia: Entity–attribute–value model"
+[self]: http://www.sqlstyle.guide
+    "SQL style guide by Simon Holywell"
+[licence]: http://creativecommons.org/licenses/by-sa/4.0/
+    "Creative Commons Attribution-ShareAlike 4.0 International License"

style.css

@@ -85,10 +85,31 @@ a:hover {
 
 header.top {
     background: {{ primary_colour }};
+    color: #333;
 }
 
 header.top h1 {
     color: #fff;
+    margin-bottom: 0;
+}
+
+header.top p.author {
+    margin-top: 0;
+}
+
+header.top a {
+    color: #333;
+    border-color: #333;
+}
+
+header.top a:hover {
+    border: none;
+    text-decoration: none;
+}
+
+header.top p.twitter {
+    float: right;
+    margin-top: -3em;
 }
 
 .wrap {