Make windows build scripts read file for version number

build_scripts/win/common.py

@@ -8,10 +8,15 @@ import subprocess
 import shutil
 import distutils.dir_util
 
+def get_version_string():
+    dir_path = os.path.dirname(os.path.realpath(__file__))
+    with open(dir_path + "/../compile_version_string.txt", "r") as file:
+        contents = file.readline()
+        return contents
+
+
 #Const globals
-#Version string must be bumped every release.
-#TODO: See developer documentation.
-VERSION_STRING = "3-1-0-dev"
+VERSION_STRING = get_version_string()
 
 EXIT_CODE_SUCCESS = 0
 EXIT_CODE_FAILURE_BUILD_APP = 1