Setup ESLint properly

Author: jwilsson

.eslintrc.json

@@ -17,10 +17,16 @@
     "dot-notation": 2,
     "eol-last": 2,
     "eqeqeq": 2,
-    "func-style": [2, "expression"],
     "guard-for-in": 2,
-    "indent": [2, 4, { "SwitchCase": 1, "VariableDeclarator": 0 }],
+    "indent": [2, 4, {
+        "SwitchCase": 1,
+        "VariableDeclarator": 0
+    }],
     "key-spacing": 2,
+    "keyword-spacing": [2, {
+        "after": true,
+        "before": true
+    }],
     "newline-after-var": 2,
     "no-caller": 2,
     "no-console": 0,
@@ -34,12 +40,13 @@
     "one-var": [2, "never"],
     "quotes": [2, "single", "avoid-escape"],
     "semi": 2,
-    "space-after-keywords": 2,
     "space-before-blocks": 2,
     "space-before-function-paren": 2,
     "space-in-parens": 2,
-    "space-return-throw-case": 2,
-    "space-unary-ops": [2, { "words": true, "nonwords": false }],
+    "space-unary-ops": [2, {
+        "nonwords": false,
+        "words": true
+    }],
     "strict": [2, "global"],
     "vars-on-top": 2,
     "yoda": 2

package.json

@@ -22,6 +22,7 @@
   },
   "devDependencies": {
     "chai": "^3.5.0",
+    "eslint": "^2.2.0",
     "mocha": "^2.4.5",
     "rewire": "^2.5.1",
     "sinon": "^1.17.3"