MINIFICPP-507 Added NOOP appveyor.xml

This closes #341.

Signed-off-by: Aldrin Piri <aldrin@apache.org>
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..8901cf0
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1 @@
+build_script: echo NOOP