Add support for using polling with webpack-dev-server

• Add --poll option to server command 8c7af67
• Bump nock to latest version 513c813
• Merge pull request #27 from nimbu/dependabot/npm_and_yarn/ini-1.3.8 e968814
• Fix url deprecations e702a17
• Merge pull request #26 from nimbu/dependabot/npm_and_yarn/elliptic-6.5.4 8a547c4
• Bump ini from 1.3.5 to 1.3.8 da1e964
• Bump dependencies with minor upgrades 4a03ce4
• Bump dependencies with patch level updates ecaa823
• Bump elliptic from 6.5.3 to 6.5.4 86348d7

v4.1.5...v4.1.6