Update python requirements

#189

README.md

@@ -41,7 +41,7 @@
 
 # Installation
 
-Install Python 3.6 or higher:
+Install Python 3.7 or higher:
 - [For Mac](https://www.python.org/downloads/mac-osx/)
 - For Windows: [desktop](https://www.python.org/downloads/windows/) or [Microsoft Store](https://www.microsoft.com/p/python-38/9mssztt1n39l)
 - [For Ubuntu](https://askubuntu.com/a/865569)

pokemonterminal/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.6
+#!/usr/bin/env python3.7
 """The main module that brings everything together."""
 
 import os

setup.py

@@ -70,9 +70,9 @@ Supports iTerm2, Terminology, Tilix and ConEmu.""",
         "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
 
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6"
+        "Programming Language :: Python :: 3.7"
     ],
 
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     install_requires=(["psutil"] if sys.platform != "win32" else None)
 )