Feature/docs basic entries (#123)

* Re-arranged basic docs, added configuration page

* Altered ordering of pages

* Added changelog to docs

* Added about header to index

* Removed reference to code base

* Added quote type to docs config

* Made configuration docs into a directory

* Added HSTS and X-Frame-Options docs

* Added empty CSP docs file

* Added docs for the  X-Content-Type-Options header

* Added docs for the X-XSS-Protection header

* Linked to the CSP header docs in the X-Frame-Options header

* Fixed layout types on header config docs

docs/configuration/Strict-Transport-Security.md

@@ -1,6 +1,7 @@
 ---
 title: Strict-Transport-Security (HSTS)
 nav_order: 1
+layout: page
 ---
 
 The Mozilla Developer Network describes the Strict-Transport-Security header like this:

docs/configuration/X-Content-Type-Options.md

@@ -1,6 +1,7 @@
 ---
 title: X-Content-Type-Options
 nav_order: 4
+layout: page
 ---
 
 The Mozilla Developer Network describes the X-Content-Type-Options header like this:

docs/configuration/X-Frame-Options.md

@@ -1,6 +1,7 @@
 ---
 title: X-Frame-Options (XFO)
 nav_order: 2
+layout: page
 ---
 
 The Mozilla Developer Network describes the X-Frame-Options header like this:

docs/configuration/X-XSS-Protection.md

@@ -1,6 +1,7 @@
 ---
 title: X-XSS-Protection
 nav_order: 3
+layout: page
 ---
 
 The Mozilla Developer Network describes the X-XSS-Protection header like this:

docs/configuration/index.md

@@ -1,6 +1,7 @@
 ---
 title: Configuration
 nav_order: 2
+layout: page
 ---
 
 This Middleware uses the builder pattern to set up the header information, which is a compile time dependency. If you need to change the configuration, you will need to rebuild your application.