Fix lint

- Upgrade babel-eslint
- Ignore coverage
- Fix actual lint warning

Author: zpao

.eslintignore

@@ -11,5 +11,6 @@ docs/vendor/bundle/
 examples/
 # Ignore built files.
 build/
+coverage/
 scripts/bench/bench-*.js
 vendor/*

package.json

@@ -5,7 +5,7 @@
   "devDependencies": {
     "async": "^1.5.0",
     "babel": "^5.8.29",
-    "babel-eslint": "4.1.5",
+    "babel-eslint": "4.1.8",
     "browserify": "^12.0.1",
     "bundle-collapser": "^1.1.1",
     "coffee-script": "^1.8.0",

src/renderers/shared/reconciler/__tests__/ReactStatelessComponent-test.js

@@ -224,7 +224,7 @@ describe('ReactStatelessComponent', function() {
   it('should allow simple functions to return false', function() {
     function Child() {
       return false;
-    };
+    }
     expect(() => ReactTestUtils.renderIntoDocument(<Child />)).not.toThrow();
   });