utils: Added missing shebangs to python scripts

Signed-off-by: Joel Holdsworth <joel@airwebreathe.org.uk>
Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>

v2x/lib/argparse_extra.py

diff --git a/v2x/lib/argparse_extra.py b/v2x/lib/argparse_extra.py
index 76657f5..e59e6e9 100644
--- a/v2x/lib/argparse_extra.py
+++ b/v2x/lib/argparse_extra.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 
 

v2x/lib/asserts.py

diff --git a/v2x/lib/asserts.py b/v2x/lib/asserts.py
index 644fadb..775f00b 100644
--- a/v2x/lib/asserts.py
+++ b/v2x/lib/asserts.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 def __safe_call(f, a):
     """Call a function and capture all exceptions."""
     try:

v2x/lib/mux.py

diff --git a/v2x/lib/mux.py b/v2x/lib/mux.py
index 4328313..aa6b21d 100644
--- a/v2x/lib/mux.py
+++ b/v2x/lib/mux.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import lxml.etree as ET
 from enum import Enum