update version info in README for releasing

Author: jdlph

README.md

@@ -14,16 +14,16 @@ Path4GMNS also serves as an API to the C++-based [DTALite](https://github.com/jd
    * Origin-Destination Matrix Estimation (ODME).
 
 ## Installation
-Path4GMNS has been published on [PyPI](https://pypi.org/project/path4gmns/0.7.4/), and can be installed using
+Path4GMNS has been published on [PyPI](https://pypi.org/project/path4gmns/0.7.5/), and can be installed using
 ```
 $ pip install path4gmns
 ```
-If you need a specific version of Path4GMNS, say, 0.7.4,
+If you need a specific version of Path4GMNS, say, 0.7.5,
 ```
-$ pip install path4gmns==0.7.4
+$ pip install path4gmns==0.7.5
 ```
 
-v0.7.4 comes with bug and issue fixes. All previous releases shall be deprecated for any purposes.
+v0.7.5 comes with bug fixes. All previous releases shall be deprecated for any purposes.
 
 ### Dependency
 The Python modules are written in **Python 3.x**, which is the minimum requirement to explore the most of Path4GMNS. Some of its functions require further run-time support, which we will go through along with the corresponding use cases in the following section.
@@ -389,8 +389,8 @@ As **CMAKE_BUILD_TYPE** will be **IGNORED** for IDE (Integrated Development Envi
 # from the root directory of PATH4GMNS
 $ python setup.py sdist bdist_wheel
 $ cd dist
-# or python -m pip instal pypath4gmns-0.7.4-py3-none-any.whl
-$ python -m pip install path4gmns-0.7.4.tar.gz
+# or python -m pip instal pypath4gmns-0.7.5-py3-none-any.whl
+$ python -m pip install path4gmns-0.7.5.tar.gz
 ```
 
 Here, 0.7.4 is the version number. Replace it with the one specified in setup.py.