Added README

Author: Adwaith-Rajesh

README.md

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+# Pip Venv Sure
+
+Prevents the installation of packages into you base installation of python
+
+## usage and setup
+
+```commandline
+pip3 install pip-venv-sure
+alias pip3=pip-venv-sure
+```
+
+## motivation
+
+I don't like installing packages directly into my base installation. But as a mere human being I sometimes forget to activate my venv, so this prevent these kinds to accidents from happening.
+
+### installing packages to base installation.
+
+Some times there is a need to install package directly to the base installation of python in that case you can use the following command.
+
+```commandline
+pip3 install any-template --allow-no-venv
+
+# OR
+
+pip3 install any-template -anv
+```