add template modification section

README.md

@@ -19,7 +19,7 @@ request (e.g. send contact mail to shop administrator) or refuse and show an err
 
 Please proceed with one of the following ways to install the module:
 
-### Module installation via composer
+### Module installation
 
 In order to install the module via composer, run the following commands in commandline of your shop base directory 
 (where the shop's composer.json file resides).
@@ -28,17 +28,24 @@ In order to install the module via composer, run the following commands in comma
 composer require oxid-projects/captcha-module
 ```
 
-### Module installation via repository cloning
+### Adjustments of shop theme
+
+Depending of the installed theme, required tpl blocks may be missing. Please add the missing blocks (as described in metadata.php) to the shop theme templates.
+
+Exceptions:
+`tpl/form/fieldset/user_billing.tpl` - wrap block with this condition:
 
-Clone the module to your OXID eShop **modules/oe/** directory:
 ```
-git clone https://github.com/OXIDprojects/captcha-module.git captcha
+[{if $blIsRegister == true}]
+    [{block name="captcha_form"}][{/block}]
+[{/if}]
 ```
 
-### Module installation from zip package
+`tpl/form/register.tpl` - insert the variable to the include command:
 
-* Make a new folder "captcha" in the **modules/oe/ directory** of your shop installation. 
-* Download the https://github.com/OXIDprojects/captcha-module/archive/master.zip file and unpack it into the created folder.
+```
+[{include file="form/fieldset/user_billing.tpl" blIsRegister=true}]
+```
 
 ## Activate Module