Update version info after v2.0 (#75)

README.md

@@ -28,6 +28,8 @@ Currently nn-Meter has been tested on Linux and Windows system. Windows 10, Ubun
 pip install nn-meter
 ```
 
+`nn-meter==2.0` has been released now.
+
 If you want to try latest code, please install nn-Meter from source code. First git clone nn-Meter package to local:
 
 ```Bash

setup.py

@@ -5,7 +5,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='nn-meter',
-    version='2.0',
+    version='2.0dev',
     description='nn-Meter is a novel and efficient system to accurately predict the inference latency of DNN models on diverse edge devices.',
     long_description = open('README.md', encoding='utf-8').read(),
     long_description_content_type = 'text/markdown',