fix npm warnings

[grtjn]

npm WARN deprecated express@2.5.11: express 2.x series is deprecated
npm WARN deprecated connect@1.9.2: connect 1.x series is deprecated
npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated minimatch@0.2.14: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated graceful-fs@1.2.3: graceful-fs v3.0.0 and before will fail on node releases >= v7.0. Please update to graceful-fs@^4.0.0 as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.
npm WARN deprecated to-iso-string@0.0.2: to-iso-string has been deprecated, use @segment/to-iso-string instead.
npm WARN deprecated jade@0.26.3: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN prefer global marked@0.3.7 should be installed with -g
npm WARN prefer global jsonlint@1.6.2 should be installed with -g
npm WARN prefer global js-beautify@1.5.10 should be installed with -g

Most importantly find out where the graceful-fs@1.2.3 message comes from..

[prestonmcgowan]

+1, especially for the known RegExp issue

[prestonmcgowan]

A few more...

[14:00:46] Starting 'marklogic-node:npmInstall'...
npm WARN deprecated gulp-util@3.0.8: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated gulp-util@3.0.7: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated minimatch@0.2.14: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated to-iso-string@0.0.2: to-iso-string has been deprecated, use @segment/to-iso-string instead.
npm WARN deprecated jade@0.26.3: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated formatio@1.1.1: This package is unmaintained. Use @sinonjs/formatio instead
npm WARN deprecated graceful-fs@3.0.11: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js
npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated jscs-preset-wikimedia@1.0.1: Deprecated in favour of eslint-config-wikimedia. -- https://phabricator.wikimedia.org/T118941
npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated natives@1.1.3: This module relies on Node.js's internals and will break at some point. Do not use it, and update to graceful-fs@4.x.
npm WARN deprecated express@2.5.11: express 2.x series is deprecated
npm WARN deprecated nomnom@1.8.1: Package no longer supported. Contact support@npmjs.com for more info.
npm WARN deprecated connect@1.9.2: connect 1.x series is deprecated
npm WARN deprecated formidable@1.0.17: Old versions of Formidable are not compatible with the current Node.js; Upgrade to 1.2.0 or later
npm WARN deprecated graceful-fs@1.2.3: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js