Convert to Python 3, improve efficiency

Version 2 implements new features like multiprocessing, verbose null checks, and in depth messages

README.md

@@ -1,7 +1,7 @@
-# PythonBuddy 🖊️ 🐍 
+# PythonBuddy 🖊️ 🐍
 [![Travis branch](https://img.shields.io/travis/rust-lang/rust/master.svg)](https://travis-ci.org/ethanchewy/OnlinePythonLinterSyntaxChecker)
 <br>
-Online Python 2.7 Programming with Live Pylint Syntax Checking!
+Online Python 3.6 Programming with Live Pylint Syntax Checking!
 <br>
 ![](pybuddy.gif)
 
@@ -10,13 +10,13 @@ Online Python 2.7 Programming with Live Pylint Syntax Checking!
   ```
   git clone https://github.com/ethanchewy/PythonBuddy.git
   ```
-2) Change to directory 
+2) Change to directory
   ```
   cd PythonBuddy
   ```
 2) Create virtualenv based on your own system:
   ```
-  virtualenv venv
+  python3 -m venv venv
   ```
 3) Activate vitrual environment:
   ```
@@ -47,9 +47,9 @@ Online Python 2.7 Programming with Live Pylint Syntax Checking!
 ![](pybuddy2.gif)
 
 <br>
-<li>Python 2.7 Execution
+<li>Python Execution
   <ul>
-    <li>Python 2.7 Complilation</li>
+    <li>Python Complilation</li>
     <li>Basic Sandboxing</li>
   </ul>
 </li>
@@ -66,22 +66,20 @@ Online Python 2.7 Programming with Live Pylint Syntax Checking!
 ### Customization Options
 
 1. Edit app.py to change any pylint options (like showing/hiding hints warnings)
-2. Want Python 3? 
- 1. Change step 2 from the installation instructions to: 
-    ```
-    virtualenv -p python3 venv
-    ```
- 2. Follow rest of instructions
-3. Security
+2. Security
  1. To create a much more secure Python Environment, consider using RestrictedPython: https://github.com/ethanchewy/OnlinePythonLinterSyntaxChecker/tree/restrictedpython
  2. For more security but enough flexibility, you could restrict the temp.py python file without read/write permissions via these instuctions: http://stackoverflow.com/questions/186202/what-is-the-best-way-to-open-a-file-for-exclusive-access-in-python
+3. For versions that used Python 2 or to see older versions, check: https://github.com/ethanchewy/PythonBuddy/releases
+
+### Unit Tests
 
 ### Future Goals:
 - Make easily embeddable for MOOCs like edX and other education platform
 - Create an analytics system that models the student's python learning and tells them where they need improvement (many programming students learn by copying and pasting and don't actually understand the nuances of the Python language).
 - Stricter Python Sandboxing via Pypy's sandboxing solution
 - Lower CPU usage
 - Allow users to generate a link to a unique code snippet similar to JSBin
+- Unit tests for client side JS
 
 ### FAQ:
 Why did you make this? <br>