deps: upgrade npm to 3.6.0

PR-URL: #4958
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Kat Marchán <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Jeremiah Senkpiel <[email protected]>

Author: iarna

deps/npm/.mailmap

@@ -2,6 +2,8 @@ Alex K. Wolfe <alexkwolfe@gmail.com>
 Andrew Bradley <cspotcode@gmail.com>
 Andrew Lunny <alunny@gmail.com>
 Arlo Breault <arlolra@gmail.com>
+Ashley Williams <ashley@npmjs.com> <ashley@bocoup.com>
+Ashley Williams <ashley@npmjs.com> <ashley666ashley@gmail.com>
 Benjamin Coe <bencoe@gmail.com>
 Benjamin Coe <bencoe@gmail.com> <ben@npmjs.com>
 Brian White <mscdex@mscdex.net> <mscdex@gmail.com>
@@ -28,10 +30,12 @@ James Treworgy <jamietre@gmail.com>
 Jason Smith <jhs@iriscouch.com>
 Jonas Weber <github@jonasw.de>
 Julien Meddah <julien.meddah@deveryware.com>
+Kevin Lorenz <mail@kevinlorenz.com>
 Kris Windham <kriswindham@gmail.com>
 Lin Clark <lin.w.clark@gmail.com>
 Luke Arduini <luke.arduini@gmail.com> <luke.arduini@me.com>
 Maciej Małecki <me@mmalecki.com> <maciej.malecki@notimplemented.org>
+Martin Ek <mail@ekmartin.com>
 Max Goodman <c@chromakode.com>
 Maxim Bogushevich <boga1@mail.ru>
 Maximilian Antoni <mail@maxantoni.de> <maximilian.antoni@juliusbaer.com>

deps/npm/.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 node_js:
-  - "4.1"
-  - "4.0"
+  - "5"
+  - "4"
   - iojs
   - "0.12"
   - "0.10"