Support python2 pip install (#115)

* Let pip package support python 2.7

* update change log

Author: shifucun

CHANGELOG.md

@@ -1,6 +1,18 @@
 # Changelog
 
-## 1.06
+## 1.0.7
+
+**Date** - 02/04/2020
+
+**Release Tag** - [v1.0.7](https://github.com/datacommonsorg/api-python/releases/tag/v1.0.7)
+
+**Release Status** - Current head of branch [`master`](https://github.com/datacommonsorg/api-python/tree/master)
+
+New features added to the Python Client API
+
+-   Support python 2.7.
+
+## 1.0.6
 
 **Date** - 01/29/2020
 

setup.py

@@ -24,8 +24,8 @@
 URL = 'https://github.com/datacommonsorg/api-python'
 EMAIL = 'support@datacommons.org'
 AUTHOR = 'datacommons.org'
-REQUIRES_PYTHON = '>=3.6.0'
-VERSION = '1.0.6'
+REQUIRES_PYTHON = '>=2.7'
+VERSION = '1.0.7'
 
 REQUIRED = [
     'httplib2',