Merge pull request #18 from snowcore/fix/blocks

Some fixes and improvements for blocks section

Author: simpleadm

3. Customizing the Magento UI/2. Determine how to use blocks.md

@@ -96,6 +96,9 @@ Avoid extending this template class, because with inheriting the template block
 If you need custom presentation logic in your blocks, use this class as block, and declare
 custom view models in block arguments in layout handle file.
 
+View model parameter can have any name.
+Also, one block can have multiple view models injected via layout.
+
 Example:
 
 ```xml
@@ -109,7 +112,7 @@ Example:
 In template, access your model instead of the block:
 
 ```php
-$viewModel = $block->getViewModel();
+$viewModel = $block->getData('viewModel');
 ```
 
 [ViewModels in Magento 2](https://www.yireo.com/blog/1856-viewmodels-in-magento-2)
@@ -134,9 +137,9 @@ At this stage all blocks in layout are generated, but _prepareLayout is only run
 
 `_beforeToHtml`:
 - can't change page title?
-- some block are rendered, can't change them
+- some blocks are rendered, can't change them
 - assign additional template values
-- delay computation to latest point until render. if block is not rendered we save computation
+- delay computation to the latest point until render. If block is not rendered we save computation
 
 `_toHtml`:
 - block without template, put custom rendering here, e.g. calling external API