Use stylelint-config-suitcss as a dev dependency

It requires users to install it where they use the preprocessor so
doesn't make sense to use it as a hard dependency.

Author: simonsmith

CHANGELOG.md

@@ -1,5 +1,8 @@
 ### HEAD
 
+* Use `stylelint-config-suitcss` as a dev dependency as it must be installed
+where the preprocessor is being used.
+
 ### 0.8.0 (December 01, 2015)
 
 * Add [stylelint](http://stylelint.io/) as an optional linting step

README.md

@@ -99,12 +99,16 @@ Where to resolve imports from. Passed to [`postcss-import`](https://github.com/p
 * Type: `Boolean`
 * Default: `false`
 
-Ensure code conforms to the [SUIT code style](https://github.com/suitcss/suit/blob/master/doc/STYLE.md). Stylelint [configuration options](http://stylelint.io/?/docs/user-guide/configuration.md) can also be overridden:
+Ensure code conforms to the [SUIT code style](https://github.com/suitcss/suit/blob/master/doc/STYLE.md)
+by using the [stylelint-config-suitcss](https://github.com/stylelint/stylelint-config-suitcss) package.
+
+Stylelint [configuration options](http://stylelint.io/?/docs/user-guide/configuration.md) can also be overridden:
 
 ```js
 {
   lint: true,
   stylelint: {
+  extends: 'stylelint-config-suitcss',
     rules: {
       indentation: [4, 'tab'],
     }
@@ -122,8 +126,6 @@ project root. For example:
 }
 ```
 
-This would also need the [stylelint-config-suitcss](https://github.com/stylelint/stylelint-config-suitcss) package to be installed.
-
 **Note**: This works the same with the CLI `-l` flag.
 
 ##### `minify`

package.json

@@ -29,8 +29,7 @@
     "postcss-import": "^7.1.3",
     "postcss-reporter": "^1.3.0",
     "read-file-stdin": "0.2.0",
-    "stylelint": "^2.3.5",
-    "stylelint-config-suitcss": "^1.0.0"
+    "stylelint": "^2.3.5"
   },
   "devDependencies": {
     "chai": "^3.4.1",
@@ -39,7 +38,8 @@
     "mocha": "^2.3.4",
     "postcss-property-lookup": "^1.1.4",
     "rewire": "^2.5.1",
-    "sinon": "^1.17.2"
+    "sinon": "^1.17.2",
+    "stylelint-config-suitcss": "^1.0.0"
   },
   "scripts": {
     "test": "npm run lint && mocha --reporter spec --slow 400",