Removal of --installTemplate

Added

• Breaking change - Remove flags --installTemplate and --uninstallTemplate as they are only used to add a text file. PR #61 is a better way to inject co-authors inline. @rkotze
• git mob --installTemplate should be optional. Issue #60. Thanks to @jonsmithers
• Update readme: Removed the warning which is no longer valid, as a stable version has been released. PR #62 Thanks to @IPWright83
• Improve readme on how to setup git mob for inline commit git commit -m. @rkotze
• Update to latest dependencies common-tags, minimist and update-notifier @rkotze
• Update all dev dependencies @rkotze