Feature/add docs (#689)

* Add converted docs repo

* Set theme jekyll-theme-minimal

* Removed BC docs, added TOC

* Added TOCs, rewrote most important links in documentation. Linked README to new Github Pages site

* some link fixes

docs/designers/language-builtin-functions/language-function-append.md

@@ -0,0 +1,49 @@
+{append} {#language.function.append}
+========
+
+`{append}` is used for creating or appending template variable arrays
+**during the execution of a template**.
+
+> **Note**
+>
+> Assignment of variables in-template is essentially placing application
+> logic into the presentation that may be better handled in PHP. Use at
+> your own discretion.
+
+**Attributes:**
+
+   Attribute Name    Type    Required   Default  Description
+  ---------------- -------- ---------- --------- ----------------------------------------------------------------------------------------------------
+        var         string     Yes       *n/a*   The name of the variable being assigned
+       value        string     Yes       *n/a*   The value being assigned
+       index        string      No       *n/a*   The index for the new array element. If not specified the value is append to the end of the array.
+       scope        string      No       *n/a*   The scope of the assigned variable: \'parent\',\'root\' or \'global\'
+
+**Option Flags:**
+
+    Name    Description
+  --------- -----------------------------------------------------
+   nocache  Assigns the variable with the \'nocache\' attribute
+
+
+    {append var='name' value='Bob' index='first'}
+    {append var='name' value='Meyer' index='last'}
+    // or 
+    {append 'name' 'Bob' index='first'} {* short-hand *}
+    {append 'name' 'Meyer' index='last'} {* short-hand *}
+
+    The first name is {$name.first}.<br>
+    The last name is {$name.last}.
+
+      
+
+The above example will output:
+
+
+    The first name is Bob.
+    The last name is Meyer.
+
+      
+
+See also [`append()`](#api.append) and
+[`getTemplateVars()`](#api.get.template.vars).