diff --git a/README.md b/README.md
index 81b0a16..a15d972 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,9 @@ Devourer is a generic REST API client for Python 2.7 and 3.3+.
 You can also subclass it to wrap a set of system calls, FFI or a messy dependency.
 
 It features an object-oriented, declarative approach to simplify the communication.
-It depends on the brilliant requests package as the gateway to API server. A simple example:
+It depends on the brilliant requests package as the gateway to API server. 
+
+### Basic usage
 
 ```python
 from devourer import GenericAPI, APIMethod, APIError
@@ -45,6 +47,27 @@ The init function gives details so you don't need to repeat them elsewhere, enab
 raising exceptions on error. You can also obtain raw string with `load_json=False` and silence errors getting
 None instead when they happen with `throw_on_error=False`.
 
+### Async usage
+
+If you want to use non-blocking calls, put following attribute in API class declaration:
+
+```python
+class AsyncTestApi(GenericAPI):
+    generate_async_methods = True
+    posts = APIMethod('get', 'posts/')
+```
+
+This will generate additional async method for each defined APIMethod attribute, appending '_async' to the name. 
+In the above example, two methods will be generated: `posts()` and `posts_async()`. The former one returns parsed 
+JSON or string containing API response, while the latter returns AsyncRequest object, which can be later queried for 
+the result:
+
+```python
+api = AsyncTestApi()
+posts_r = api.posts_async()  # send HTTP request, but don't block
+posts = posts_r.result()     # retrieve result, blocking if the request hasn't finished yet
+```
+
 Installation
 ------------
 You can just `pip install devourer`.
diff --git a/setup.py b/setup.py
index 4c56a3a..0248f4f 100644
--- a/setup.py
+++ b/setup.py
@@ -3,9 +3,10 @@
 setup(
     name='devourer',
     packages=['devourer'],
-    version='0.3.2',
+    version='0.3.3',
     install_requires=[
         'requests',
+        'gevent',
         'six',
     ],
     description='Devourer is a generic API client.'
@@ -13,7 +14,7 @@
     author='Bonnier Business Polska / Krzysztof Bujniewicz',
     author_email='racech@gmail.com',
     url='https://github.com/bonnierpolska/devourer',
-    download_url='https://github.com/bonnierpolska/devourer/tarball/0.3.2',
+    download_url='https://github.com/bonnierpolska/devourer/tarball/0.3.3',
     keywords=['api', 'generic api', 'api client'],
     classifiers=[]
 )