Use virtualenv, rename src -> lxc_net

Fix imports accordingly

.gitignore

@@ -58,3 +58,5 @@ docs/_build/
 # PyBuilder
 target/
 
+# Virtualenv
+venv/

lxc_net/network.py

@@ -1,8 +1,8 @@
 """ Network objects """
 
-import settings
-import util
-from xml_template import XMLTemplate
+from . import settings
+from . import util
+from .xml_template import XMLTemplate
 
 import uuid
 import libvirt

lxc_net/util.py

@@ -1,6 +1,6 @@
 """ Various utils """
 
-import settings
+from . import settings
 
 
 class NumberedClass:

requirements.txt

@@ -0,0 +1,2 @@
+libvirt-python
+jinja2