chore(): update eslint and istanbul versions.

Author: jthoms1

package.json

@@ -85,9 +85,9 @@
   "devDependencies": {
     "conventional-changelog-cli": "1.1.1",
     "coveralls": "^2.2.0",
-    "eslint": "^2.8.0",
+    "eslint": "^3.0.1",
     "github": "0.2.4",
-    "istanbul": "^0.4.3",
+    "istanbul": "^0.4.4",
     "jasmine-node": "1.14.5",
     "mock-require": "1.3.0",
     "rewire": "2.5.1"