cleanup test script

bin/test

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 
 import os
 import sys
@@ -26,14 +26,14 @@ def doTest(bin_dir, regex_file):
         print regex_file, "*** FAIL"
         sys.exit(1)
 
+def main():
+    bin_dir = os.path.abspath(os.path.dirname(__file__))
+    test_dir = os.path.join(bin_dir, '..', 'tests')
+    test_files_mask = os.path.join(test_dir, '*.regex')
+    test_files_mask = os.path.realpath(test_files_mask)
 
-bin_dir = os.path.abspath(os.path.dirname(__file__))
-test_dir = os.path.join(bin_dir, '..', 'tests')
-test_files_mask = os.path.join(test_dir, '*.regex')
-test_files_mask = os.path.realpath(test_files_mask)
+    test_files = glob.glob(test_files_mask)
+    for test_file in test_files:
+        doTest(bin_dir, test_file)
 
-test_files = glob.glob(test_files_mask)
-for test_file in test_files:
-    doTest(bin_dir, test_file)
-
-sys.exit(0)
+    sys.exit(0)