Merge remote-tracking branch 'origin/master'

# Conflicts:
#	UPGRADE.md

Author: unclead

UPGRADE.md

@@ -45,4 +45,4 @@ After installing version 1.1.0 you have to rename js events following the next s
 
 - Event `init` rename to `afterInit` 
 - Event `addNewRow` rename to `afterAddRow`
-- Event `removeRow` rename to `afterDeleteRow` 
+- Event `removeRow` rename to `afterDeleteRow` 

docs/configuration.md

@@ -12,7 +12,7 @@ Widget support the following options that are additionally recognized over and a
 you use widget without a model, since in this case widget is not able to detect client-side options automatically
 
 **addButtonPosition** *integer|array*: the position(s) of `add` button.
-This can be `MultipleInput::POS_HEADER`, `MultipleInput::POS_ROW` or `MultipleInput:PO_FOOTER`
+This can be `MultipleInput::POS_HEADER`, `MultipleInput::POS_ROW` or `MultipleInput:POS_FOOTER`
 
 **addButtonOptions** *array*: the HTML options for `add` button. Can contains `class` and `label` keys
 
@@ -106,4 +106,4 @@ For using widget as column input you may use the following code:
         'mask' => '999-999-99-99'
     ]
 ]
-```
+```