[Tests] require 0.6 to pass

Author: ljharb

.travis.yml

@@ -14,6 +14,7 @@ node_js:
   - "0.12"
   - "0.10"
   - "0.8"
+  - "0.6"
 before_install:
   - 'nvm install-latest-npm'
 install:
@@ -175,8 +176,6 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "0.9"
       env: TEST=true ALLOW_FAILURE=true
-    - node_js: "0.6"
-      env: TEST=true ALLOW_FAILURE=true
     - node_js: "0.4"
       env: TEST=true ALLOW_FAILURE=true
   allow_failures: