removing node 0.8 from test suite

travis uses an old version of npm with node 0.8, causing issues with modules
that use "^" in the version specification.

See https://travis-ci.org/SheetJS/js-xlsx/jobs/56966869 for more info

.travis.yml

@@ -3,7 +3,7 @@ node_js:
   - "iojs"
   - "0.11.14"
   - "0.10"
-  - "0.8"
+#  - "0.8" # commented because of npm issue with camelcase
 before_install:
   - "npm install -g mocha"
   - "npm install blanket"