👷 add codeclimate config

* note: don't care about dangling commas right now
  we shouldn't have dangling commas (http://eslint.org/docs/rules/comma-dangle),
  if we want to support IE 8, but we aren't trying to support IE 8

* note: we also tell codeclimate to use more modern eslint

* note: we ignore a number of vendor files

* removed csslintrc option csslint didn't know about,
  I think this was put there by codeclimate - maybe they have nonstandard csslint?
  "---exclude-exts=.min.css" in .csslintrc

* note: approve qualified-headings
  qualified-headings are OK because we're using html5, so
  .foo h1, and .bar h1 are reasonable.

* ignore minified css files
  we should only be testing original source files

* includes stylelint engine

* lower duplication warning levels - settings were too strict
  codeclimate was catching places where two kind-of similar lines were repeated in one other place,
  and the code seemed fine (short enough and duplication of strings, stuff like that).

.codeclimate.yml

@@ -0,0 +1,30 @@
+---
+engines:
+  csslint:
+    enabled: true
+  duplication:
+    enabled: true
+    config:
+      languages:
+        javascript:
+          mass_threshold: 42
+          count_threshold: 3
+  eslint:
+    enabled: true
+    channel: eslint-3
+  fixme:
+    enabled: true
+  stylelint:
+    enabled: true
+    channel: beta
+ratings:
+  paths:
+  - "**.css"
+  - "**.inc"
+  - "**.js"
+  - "**.jsx"
+  - "**.module"
+exclude_paths:
+- "**/vendor/**/*"
+- "**/*.min.css"
+- js/vendor/*

.csslintrc

@@ -0,0 +1 @@
+--ignore=adjoining-classes,box-model,ids,order-alphabetical,unqualified-attributes,qualified-headings

.eslintignore

@@ -0,0 +1,2 @@
+**/*{.,-}min.js
+js/vendor/*