Prevent eslint from passing with exclusive tests (#133)

.eslintrc.json

@@ -11,7 +11,8 @@
     },
     "parser": "babel-eslint",
     "plugins": [
-        "react"
+        "react",
+        "mocha"
     ],
     "env": {
         "browser": true,
@@ -254,6 +255,7 @@
         "vars-on-top": 0,
         "wrap-iife": [2, "outside"],
         "wrap-regex": 2,
-        "yoda": [2, "never", {"exceptRange": false, "onlyEquality": false}]
+        "yoda": [2, "never", {"exceptRange": false, "onlyEquality": false}],
+        "mocha/no-exclusive-tests": 2
     }
 }

package.json

@@ -27,6 +27,7 @@
     "babel-register": "6.16.3",
     "deep-freeze": "0.0.1",
     "eslint": "3.7.1",
+    "eslint-plugin-mocha": "4.7.0",
     "eslint-plugin-react": "6.3.0",
     "fetch-mock": "5.5.0",
     "mocha": "3.1.0",