Remove references to pipenv from README

Author: seanchen1991

README.md

@@ -28,32 +28,18 @@ best for learning new languages.
 
 ## Resources
 
-* [Installing Python and pipenv](https://github.com/LambdaSchool/CS-Wiki/wiki/Installing-Python-3-and-pipenv)
+* [Installing Python 3](https://github.com/LambdaSchool/CS-Wiki/wiki/Installing-Python-3)
 * [JavaScript<->Python cheatsheet](https://github.com/LambdaSchool/CS-Wiki/wiki/Javascript-Python-cheatsheet)
 * [How to read Specs and Code](https://github.com/LambdaSchool/CS-Wiki/wiki/How-to-Read-Specifications-and-Code)
 * [Python 3 standard library](https://docs.python.org/3.6/library/)
 
 ## Getting started
 
-1. Make sure you have Python 3 and pipenv installed.
-
-2. Go to the directory with the `Pipfile` and run
-   ```
-   pipenv install
-   ```
-
-3. After the install completes, run
-   ```
-   pipenv shell
-   ```
-   This will get you into the virtual environment. At this point, you should be
-   able to run Python 3 by just running `python`:
-   ```
-   $ python --version
-   Python 3.6.5
-   ```
-
-   You can exit the virtual environment by typing `exit`.
+Make sure you have Python 3 installed by running:
+```
+$ python --version
+Python 3.6.5
+```
 
 ## Goals