updated readme to contain an updated version of the installion command

README.md

@@ -51,14 +51,15 @@ For this it is best to set up a virtual environment. Activate the virtualenviron
 Then run:
 ```
 python setup.py clean && python setup.py build --force && python setup.py sdist && pip install -v dist/binarycpython-<version of this package>.tar.gz
+python setup.py clean && pip uninstall binarycpython && rm dist/* && python setup.py build --force && python setup.py sdist && pip install -v dist/binarycpython-<version of this package>.tar.gz
 ```
-You can find the version of this package in setup.py.
+This will clean the build directory, remove binarycpython from the venv, remove the dist packages, and then rebuilding and reinstalling the package. You can find the version of this package in setup.py.
 
 This will install this package into the virtual environment. Making changes to the sourcecode can be "installed" into the virtual env with the same command. 
 
 If this is not the first time you install the package, but rather rebuild it because you make changes in either binary_c or binarycpython, you should ignore the currently installed version, and also skip installing the dependencies again, by executing the following command:
 ```
-python setup.py clean && python setup.py build --force && python setup.py sdist && pip install --ignore-installed --no-dependencies -v dist/binarycpython-<version of this package>.tar.gz
+python setup.py clean && pip uninstall binarycpython && rm dist/* && python setup.py build --force && python setup.py sdist && pip install --ignore-installed --no-dependencies -v dist/binarycpython-<version of this package>.tar.gz
 ```
 
 #### After installation