doc: add requirements.txt

so we can built this project using readthedocs.org

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644 (file)
index 0000000..58bda1c
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1,3 @@
+sphinx
+sphinxcontrib-programoutput
+mock == 2.0.0