deps: float node-gyp v3.0.0

    * support process.release
    * support all io.js versions
    * support node v4+ including new download locations
    * enable delay-load hook by default by default
    * download header-only tarballs instead of full source

See nodejs/node-gyp#711 for full details

PR-URL: #2700
Reviewed-By: Forrest L Norvell <[email protected]>

Author: rvagg

deps/npm/node_modules/node-gyp/.npmignore

@@ -62,7 +62,7 @@
     "lru-cache": "~2.6.5",
     "minimatch": "~2.0.10",
     "mkdirp": "~0.5.1",
-    "node-gyp": "nodejs/node-gyp#process.release",
+    "node-gyp": "~3.0.0",
     "nopt": "~3.0.3",
     "normalize-git-url": "~3.0.1",
     "normalize-package-data": "~2.3.2",