Update dependencies

Author: Yannick Croissant

package.json

@@ -27,11 +27,11 @@
     "jsx-ast-utils": "^1.3.1"
   },
   "devDependencies": {
-    "babel-eslint": "6.1.2",
-    "coveralls": "2.11.12",
-    "eslint": "3.5.0",
+    "babel-eslint": "7.0.0",
+    "coveralls": "2.11.14",
+    "eslint": "3.7.1",
     "istanbul": "0.4.5",
-    "mocha": "3.0.2"
+    "mocha": "3.1.0"
   },
   "peerDependencies": {
     "eslint": "^2.0.0 || ^3.0.0"