Add downloads (#45)

Author: denisart

README.md

@@ -1,6 +1,7 @@
 # graphql-query
 
 [![tag](https://img.shields.io/github/v/tag/denisart/graphql-query)](https://github.com/denisart/graphql-query)
+[![downloads](https://img.shields.io/pypi/dm/graphql-query)](https://pypi.org/project/graphql-query/)
 [![last-commit](https://img.shields.io/github/last-commit/denisart/graphql-query/master)](https://github.com/denisart/graphql-query/commits/master)
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/graphql-query)](https://pypi.python.org/pypi/graphql-query)
 [![license](https://img.shields.io/github/license/denisart/graphql-query)](https://github.com/denisart/graphql-query/blob/master/LICENSE)

docs/index.md

@@ -1,6 +1,7 @@
 # graphql-query
 
 [![tag](https://img.shields.io/github/v/tag/denisart/graphql-query)](https://github.com/denisart/graphql-query)
+[![downloads](https://img.shields.io/pypi/dm/graphql-query)](https://pypi.org/project/graphql-query/)
 [![last-commit](https://img.shields.io/github/last-commit/denisart/graphql-query/master)](https://github.com/denisart/graphql-query/commits/master)
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/graphql-query)](https://pypi.python.org/pypi/graphql-query)
 [![license](https://img.shields.io/github/license/denisart/graphql-query)](https://github.com/denisart/graphql-query/blob/master/LICENSE)