Add a pip requirements file

This patch adds a pip requirements file to make it easy to "pip install
-r requirements.txt" to satisfy the imports for the datasource.
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..91816c8
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+deepmerge
+netifaces
\ No newline at end of file