Add python version check and if python is even present on PATH. (#10)

Author: IamEld3st

run-gui.bat

@@ -6,6 +6,23 @@ cd /D "%~dp0"
 @rem Make sure the environment variables are up-to-date. This is useful if the user installed python a moment ago.
 call ./RefreshEnv.cmd
 
+python -V >nul 2>&1 && (
+    for /f "delims=" %%a in ('python -V') do @set pythonVer=%%a
+    (echo %pythonVer% | findstr /i "3.6. 3.7." >nul) && (
+        goto continue
+    ) || (
+        echo It appears that version of the installed Python is not supported.
+        echo Please install version 3.6.5!
+        goto end
+    )
+) || (
+    echo Python was not found!
+    echo If you recently installed Python reinstall it and check the "Add to PATH" during the installation.
+    goto end
+)
+:continue
+
 python run.py gui
 
+:end
 pause

run.bat

@@ -6,6 +6,23 @@ cd /D "%~dp0"
 @rem Make sure the environment variables are up-to-date. This is useful if the user installed python a moment ago.
 call ./RefreshEnv.cmd
 
+python -V >nul 2>&1 && (
+    for /f "delims=" %%a in ('python -V') do @set pythonVer=%%a
+    (echo %pythonVer% | findstr /i "3.6. 3.7." >nul) && (
+        goto continue
+    ) || (
+        echo It appears that version of the installed Python is not supported.
+        echo Please install version 3.6.5!
+        goto end
+    )
+) || (
+    echo Python was not found!
+    echo If you recently installed Python reinstall it and check the "Add to PATH" during the installation.
+    goto end
+)
+:continue
+
 python run.py
 
+:end
 pause