chore(package): update nyc to version 10.0.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -23,7 +23,7 @@
   "devDependencies": {
     "browserify": "^13.0.0",
     "esmangle": "^1.0.0",
-    "nyc": "^9.0.1",
+    "nyc": "^10.0.0",
     "remark-cli": "^2.1.0",
     "remark-preset-wooorm": "^1.0.0",
     "tape": "^4.5.1",