Added global variables in sitefiles to allow for https support

documentation/sitefiles.md

@@ -11,14 +11,23 @@ sitefiles also allow comments with #
 
 # Part 2: Commands
 
-* ```set [variable] [value]``` - sets some variable for the following pages
+* ```set [variable] [value]``` - sets some local variable for the following pages
+* ```define [variable] [value]``` - sets some global variable
 * ```read [http path] [file path]``` - if the requested path matches ```[http path]```, return the contents of ```[file path]```. If [file path] is a directory, then the http path is appended to [file path] and that is read instead.
 
 ##### Other than set, commands should take in a regex as argument 1 and operate on a file specified in argument 2.
 
-# Part 3: Variables
+# Part 3: Local variables
 
-* ```respondto```: - The type of http request to respond to. One of:
+* ```respondto``` - The type of http request to respond to. One of:
 	* GET (defualt)
 	* POST
-* ```host```: - The hostname to respond to. Case insensitive, default: localhost
+* ```host``` - The hostname to respond to. Case insensitive, default: localhost
+
+# Part 4: Global variables
+
+* ```transport``` - the type of connection to use. One of:
+	* TCP (default)
+	* TLS
+* ```key``` - The filepath of the private key to use if transport == TLS
+* ```cert``` - The filepath of the certificate to use if transport == TLS