Fixed readme

README.rst

@@ -5,25 +5,15 @@ Autotuning and Predictive Autotuning
 in place of the original program, to greatly speedup autotuning while getting results
 comparable in quality. ``current_version == 0.3``.
 
-Requirements
+Installation
 ------------
 
-``predtuner`` requires ``python >= 3.7`` and ``pip``, preferrably ``pip >= 20``.
-To install from PyPI (currently TestPyPI), use
+``predtuner`` requires ``python >= 3.6`` and ``pip``, preferrably ``pip >= 20``.
+To install this package from source, at the root directory of this repository, do:
 
 .. code-block:: bash
 
-   python -m pip install -i https://test.pypi.org/simple/ predtuner
-
-Install from Source
-^^^^^^^^^^^^^^^^^^^
-
-Alternatively, you can install this package from source.
-At the root directory of this repository, do:
-
-.. code-block:: bash
-
-   python -m pip install -e ./
+   python3 -m pip install -e ./
 
 With the flag ``-e``, any changes to code in this repo is reflected on the installed version automatically.
 It can be omitted if you don't intend to modify the code in this package.