Add stylelint

.stylelintrc

@@ -0,0 +1,73 @@
+{
+	"ignoreFiles": [
+		"client/css/bootstrap.css"
+	],
+	"rules": {
+		"at-rule-empty-line-before": ["always", {
+			"except": ["blockless-group", "first-nested"],
+			"ignore": ["after-comment"]
+		}],
+		"block-closing-brace-newline-after": "always",
+		"block-closing-brace-newline-before": "always-multi-line",
+		"block-closing-brace-space-before": "always-single-line",
+		"block-no-empty": true,
+		"block-opening-brace-newline-after": "always-multi-line",
+		"block-opening-brace-space-after": "always-single-line",
+		"block-opening-brace-space-before": "always",
+		"color-hex-case": "lower",
+		"color-hex-length": "short",
+		"color-no-invalid-hex": true,
+		"comment-empty-line-before": ["always", {
+			"except": ["first-nested"],
+			"ignore": ["stylelint-commands"]
+		}],
+		"comment-whitespace-inside": "always",
+		"declaration-bang-space-after": "never",
+		"declaration-bang-space-before": "always",
+		"declaration-block-semicolon-newline-after": "always-multi-line",
+		"declaration-block-semicolon-space-after": "always-single-line",
+		"declaration-block-semicolon-space-before": "never",
+		"declaration-block-single-line-max-declarations": 1,
+		"declaration-colon-newline-after": "always-multi-line",
+		"declaration-colon-space-after": "always-single-line",
+		"declaration-colon-space-before": "never",
+		"function-calc-no-unspaced-operator": true,
+		"function-comma-newline-after": "always-multi-line",
+		"function-comma-space-after": "always-single-line",
+		"function-comma-space-before": "never",
+		"function-parentheses-newline-inside": "always-multi-line",
+		"function-parentheses-space-inside": "never-single-line",
+		"function-whitespace-after": "always",
+		"function-url-quotes": "double",
+		"indentation": "tab",
+		"max-empty-lines": 1,
+		"media-feature-colon-space-after": "always",
+		"media-feature-colon-space-before": "never",
+		"media-feature-range-operator-space-after": "always",
+		"media-feature-range-operator-space-before": "always",
+		"media-query-list-comma-newline-after": "always-multi-line",
+		"media-query-list-comma-space-after": "always-single-line",
+		"media-query-list-comma-space-before": "never",
+		"media-query-parentheses-space-inside": "never",
+		"no-eol-whitespace": true,
+		"no-missing-eof-newline": true,
+		"number-leading-zero": "never",
+		"number-no-trailing-zeros": true,
+		"number-zero-length-no-unit": true,
+		"rule-no-duplicate-properties": true,
+		"rule-no-shorthand-property-overrides": true,
+		"rule-non-nested-empty-line-before": ["always-multi-line", {
+			"ignore": ["after-comment"]
+		}],
+		"rule-trailing-semicolon": "always",
+		"selector-combinator-space-after": "always",
+		"selector-combinator-space-before": "always",
+		"selector-list-comma-newline-after": "always",
+		"selector-list-comma-space-before": "never",
+		"selector-pseudo-element-colon-notation": "single",
+		"string-quotes": "double",
+		"value-list-comma-newline-after": "always-multi-line",
+		"value-list-comma-space-after": "always-single-line",
+		"value-list-comma-space-before": "never"
+	}
+}

package.json

@@ -14,7 +14,7 @@
     "start": "node index",
     "build": "grunt",
     "test": "HOME=test/fixtures mocha test/**/*.js && npm run lint",
-    "lint": "eslint .",
+    "lint": "eslint . && stylelint \"**/*.css\"",
     "prepublish": "npm run build"
   },
   "keywords": [
@@ -41,6 +41,7 @@
     "socket.io": "~1.0.6"
   },
   "devDependencies": {
+    "stylelint": "4.3.3",
     "eslint": "^1.5.1",
     "grunt": "~0.4.5",
     "grunt-cli": "^0.1.13",