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/programmers/api-functions/api-test-install.md

@@ -0,0 +1,22 @@
+testInstall()
+
+checks Smarty installation
+
+Description
+===========
+
+void
+
+testInstall
+
+This function verifies that all required working folders of the Smarty
+installation can be accessed. It does output a corresponding protocoll.
+
+
+    <?php
+    require_once('Smarty.class.php');
+    $smarty  = new Smarty();
+    $smarty->testInstall();
+    ?>
+
+