Add short description to README

README.rst

@@ -0,0 +1,29 @@
+Installation
+============
+
+``pip install markdownify``
+
+
+Usage
+=====
+
+Convert some HTML to Markdown:
+
+.. code:: python
+
+    from markdownify import markdownify as md
+    md('<b>Yay</b> <a href="http://github.com">GitHub</a>')  # > '**Yay** [GitHub](http://github.com)'
+
+Specify tags to exclude (blacklist):
+
+.. code:: python
+
+    from markdownify import markdownify as md
+    md('<b>Yay</b> <a href="http://github.com">GitHub</a>', strip=['a'])  # > '**Yay** GitHub'
+
+\...or specify the tags you want to include (whitelist):
+
+.. code:: python
+
+    from markdownify import markdownify as md
+    md('<b>Yay</b> <a href="http://github.com">GitHub</a>', convert=['b'])  # > '**Yay** GitHub'