Merge pull request #309 from mweibel/update-libsass

Upgrade libsass to latest master SHA hash

.travis.yml

@@ -3,5 +3,7 @@ node_js:
   - "0.10"
   - "0.11"
 
+before_install:
+  - git submodule update --init --recursive
 after_success:
   - npm run-script coverage

libsass @ cd3ee1cb

-Subproject commit 1122ead208a8d1c438daaca70041ef6dd2361fa0
+Subproject commit cd3ee1cbe34d5316eb762a43127a3de9575454ee