Update nyc

Closes GH-2.

Author: wooorm

package.json

@@ -38,7 +38,7 @@
     "circular.js": "^2.0.3",
     "esmangle": "^1.0.0",
     "hyperscript": "^2.0.2",
-    "nyc": "^9.0.1",
+    "nyc": "^10.0.0",
     "react": "^15.1.0",
     "remark-cli": "^2.1.0",
     "remark-preset-wooorm": "^1.0.0",