Global: update install requirement settings

setup.py

@@ -14,5 +14,5 @@ setup(
     data_files = [('share/doc/'+package_info.name, ['doc/mkexp.pdf', 'mkexp.bash'])],
     platforms = ['Posix'],
     license = 'LICENSE.txt',
-    requires = ['Jinja2(>= 2.6)']
+    install_requires = ['Jinja2(>= 2.6)', 'six']
 )