Let's see if recursive checkouts will fix 'gitdb not found' issue for travis.

Byron · Byron · commit 3b9b6fe0dd99 · 2014-05-04T17:01:59.000+02:00
If not, pip install should do the job
diff --git a/.travis.yml b/.travis.yml
@@ -4,4 +4,7 @@ python:
   - "2.7"
   # - "pypy" - won't work as smmap doesn't work (see gitdb/.travis.yml for details)
 
-script: nosetests
+install:
+  - git submodule update --init --recursive
+script: 
+  - nosetests
