Merge in more makefile edits from repo:voltha-docs

Change-Id: Iba7f6e565b45c5e888a34bce295d8fada8ab2ce2
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b4cb667
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,12 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# -----------------------------------------------------------------------
+
+## Python
+.venv/
+__pycache__/
+
+## Python patch creation
+staging/
+
+# [EOF]