Remove support for node <0.10

Author: fiznool

.travis.yml

@@ -1,7 +1,5 @@
 language: node_js
 node_js:
-  - '0.6'
-  - '0.8'
   - '0.10'
   - '0.12'
   - '4'

package.json

@@ -37,6 +37,6 @@
     "sinon-chai": "*"
   },
   "engines": {
-    "node": ">=0.6.0"
+    "node": ">=0.10.0"
   }
 }