fix(coverage): bithound can't eslint@^2.0.0

Author: 0-vortex

.bithoundrc

@@ -10,7 +10,7 @@
     ],
     "critics": {
         "lint": {
-            "engine": "eslint"
+            "engine": "none"
         },
         "wc": {
             "limit": 1000

.travis.yml

@@ -18,7 +18,6 @@ node_js:
 before_install:
   - npm i -g npm@^2.0.0
   - npm i -g gulp
-  - npm i -g bithound
 before_script:
   - if (( "${TRAVIS_NODE_VERSION}" >= 6 )) && [ "$TRAVIS_BRANCH" = "master" ]; then export COVERAGE_REPORT=true; fi;
   - npm prune

package.json

@@ -43,6 +43,7 @@
     "commitizen": "^2.8.2",
     "cz-conventional-changelog": "^1.1.6",
     "esdoc": "^0.4.7",
+    "eslint": "^3.0.1",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
     "gulp-codecov": "^2.0.2",