Modified setup.py and README.md.

README.md

@@ -303,7 +303,7 @@ def test_data_driven(self, **param):
     print('userid: %d, passwd: %s' % (param['userid'], param['passwd']))
 ```
 
-Results: same results as using <code>unishark.data_driven</code>, but running with different inputs in separate threads, up to 2 threads are spawned.
+Results: same results as using <code>unishark.data_driven</code>, but up to 2 threads are spawned, each running the test with a set of inputs (userid, passwd).
 
 Multi-threads data-driven in 'args style':
 ```python
@@ -312,12 +312,12 @@ def test_data_driven(self, **param):
     sleep(param['time'])
 ```
 
-Results: it spawns up to 5 threads to run the test with 10 inputs concurrently (only sleep 1 sec in each thread).
+Results: 5 threads are spawned to run the test with 10 sets of inputs concurrently (only sleep 1 sec in each thread).
 It takes about 2 sec in total (10 sec if using <code>unishark.data_driven</code>) to run.
 
 **NOTE**: It is user's responsibility to ensure thread-safe within the test method which is decorated by <code>unishark.multi_threading_data_driven</code>.
-If exceptions are thrown in one or more threads, the exceptions information will be collected and summarized in the "main" thread in the end and thrown as <code>unishark.exception.MultipleErrors</code>.
-
+If exceptions are thrown in one or more threads, the exceptions information will be collected and summarized in the "main" thread and thrown as <code>unishark.exception.MultipleErrors</code>.
+  
 
 <a name="Advanced_Usage"></a>
 ## Advanced Usage

setup.py

@@ -1,5 +1,6 @@
 from setuptools import setup, find_packages
 from os import path
+from sys import version_info
 
 NAME = 'unishark'
 VERSION = '0.2.1'
@@ -9,6 +10,15 @@
     open(path.join('docs', 'CHANGELOG.rst'), 'r').read()
 )
 
+py3_requires = ['Jinja2>=2.7.2', 'MarkupSafe>=0.23']
+py2_requires = ['Jinja2>=2.7.2', 'MarkupSafe>=0.23', 'futures>=2.2.0']
+
+requires = None
+if version_info[0] >= 3 and version_info[1] >= 2:
+    requires = py3_requires
+else:
+    requires = py2_requires
+
 setup(
     name=NAME,
     version=VERSION,
@@ -44,7 +54,7 @@
     keywords='unittest extension test reports config utility',
 
     # See https://packaging.python.org/en/latest/requirements.html
-    install_requires=['Jinja2>=2.7.2', 'MarkupSafe>=0.23', 'futures>=2.2.0'],
+    install_requires=requires,
 
     extras_require={
         'test': ['coveralls'],