Add wercker.yml

Changed Dockerfile to run as root so it has access to
/var/run/docker.sock.

Signed-off-by: Ben Firshman <ben@firshman.co.uk>

wercker.yml

@@ -0,0 +1,15 @@
+box: wercker-labs/docker
+build:
+  steps:
+    - script:
+        name: validate DCO
+        code: script/validate-dco
+    - script:
+        name: build
+        code: docker build -t fig .
+    - script:
+        name: flake8
+        code: docker run -v /var/run/docker.sock:/var/run/docker.sock fig flake8 fig
+    - script:
+        name: run tests
+        code: docker run -v /var/run/docker.sock:/var/run/docker.sock fig nosetests