Fix some typos

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/PHP-DI/PHP-DI.png?branch=master)](https://travis-ci.org/PHP-DI/PHP-DI) [![Coverage Status](https://coveralls.io/repos/PHP-DI/PHP-DI/badge.png?branch=master)](https://coveralls.io/r/PHP-DI/PHP-DI?branch=master)
 
-PHP-DI is license under the MIT License.
+PHP-DI is licensed under the MIT License.
 
 
 ## Set up

doc/definition-overriding.md

@@ -6,7 +6,7 @@ layout: documentation
 
 A simple application usually takes advantage of one or two *definition sources*: autowiring (or annotations) + a definition file/array.
 
-However in more complex application or modular systems you might want to have multiple definition files (e.g. one per modules/bundles/plugins/…). In this case, PHP-DI provides a clear and powerful system to **override and/or extend definitions**.
+However in more complex applications or modular systems you might want to have multiple definition files (e.g. one per modules/bundles/plugins/…). In this case, PHP-DI provides a clear and powerful system to **override and/or extend definitions**.
 
 ## Priorities of definition sources
 
@@ -112,7 +112,7 @@ return [
 
 ```php
 return [
-    'array' => add([
+    'array' => DI\add([
         DI\get(NewEntry::class),
     ]),
 ];

doc/how-it-works.md

@@ -25,12 +25,12 @@ A container instance has the following sub-components:
 
 ### Definitions
 
-A definition defines what is an entry:
+A definition defines what an entry is:
 
 - **a simple value** (string, number, object instance…): `ValueDefinition`
 - **a factory/callable returning the value**: `FactoryDefinition`
 - **a definition of an entry alias**: `AliasDefinition`
 - **a definition of a class**: `ObjectDefinition`
 - **a definition of an environment variable**: `EnvironmentVariableDefinition`
 
-The last type (class definition) describes how the container should create a class instance (what parameters the constructor takes, …).
+The class definition describes how the container should create a class instance (what parameters the constructor takes, …).

doc/lazy-injection.md

@@ -44,7 +44,7 @@ If you define an object as "lazy", PHP-DI will inject:
 - the object, if it has already been created
 - or else a **proxy** to the object, if it is not yet created
 
-The proxy is a special kind of object that **looks and behave exactly like the original object**, so you can't tell the difference. The proxy will instantiate the original object only when needed.
+The proxy is a special kind of object that **looks and behaves exactly like the original object**, so you can't tell the difference. The proxy will instantiate the original object only when needed.
 
 Creating a proxy is complex. For this, PHP-DI relies on [ProxyManager](https://github.com/Ocramius/ProxyManager), the (amazing) library used by Doctrine, Symfony and Zend.
 
@@ -60,7 +60,7 @@ class Foo
     }
 }
 
-$container->set('Foo', \DI\object()->lazy);
+$container->set('Foo', \DI\object()->lazy());
 
 // $proxy is a Proxy object, it is not initialized
 // It is very lightweight in memory