Update docs & examples

docs/providers/dependency.rst

@@ -1,9 +1,9 @@
-External dependency providers
+Dependency providers
------------------------------
+--------------------
 
 .. currentmodule:: dependency_injector.providers
 
-:py:class:`ExternalDependency` provider can be useful for development of
+:py:class:`Dependency` provider can be useful for development of
 self-sufficient libraries / modules / applications that have required external
 dependencies.
 
@@ -35,11 +35,10 @@ Example:
     Instead of this, ``UsersService`` has external dependency, that has to
     be satisfied by cleint's code, out of library's scope.
 
-.. image:: /images/providers/external_dependency.png
+.. image:: /images/providers/dependency.png
 
-.. literalinclude:: ../../examples/providers/external_dependency.py
+.. literalinclude:: ../../examples/providers/dependency.py
    :language: python
    :linenos:
 
-
 .. disqus::

docs/providers/index.rst

@@ -21,6 +21,6 @@ Providers package API docs - :py:mod:`dependency_injector.providers`
     singleton
     callable
     object
-    external_dependency
+    dependency
     overriding
     custom

examples/providers/dependency.py

@@ -1,4 +1,4 @@
-"""`ExternalDependency` providers example."""
+"""`Dependency` providers example."""
 
 import sqlite3
 import contextlib
@@ -45,7 +45,7 @@ class UsersService(object):
 
 
 # Database and UsersService providers:
-database = providers.ExternalDependency(instance_of=sqlite3.dbapi2.Connection)
+database = providers.Dependency(instance_of=sqlite3.dbapi2.Connection)
 users_service_factory = providers.Factory(UsersService,
                                           database=database)