Remove Gulp and update requirements lists

CONTRIBUTING.md

@@ -62,7 +62,7 @@ Of course bug reports, feature requests and [documentation](https://docs.cacheth
 
 As Cachet gains new features, the design and ideas that were once a perfect fit need updating and in some cases designing from scratch. This is where you come in! Fancy giving Cachet a lick of paint? Sweet!
 
-You'll need to install Node.js, Bower and Gulp.
+You'll need to install Node.js with NPM or Yarn.
 
 To get started you can do the following:
 
@@ -81,7 +81,8 @@ Built using [Laravel](https://laravel.com).
 We use these extra dependencies to develop Cachet:
 
 - Node.js
-- Gulp
+- NPM or Yarn
+- Composer
 - Git
 
 Once cloned to your local machine, you'll need some demo data! Run `php artisan cachet:seed` to get the demo installation ready for action.

docs/setup/prerequisites.md

@@ -6,11 +6,10 @@ To start using Cachet, you'll need some prerequisites.
 
 You'll need at least the following installed on your server:
 
-- PHP 5.5.9, you'll also need `ext-gd`, `ext-simplexml`, `mcrypt`,
-  `ext-xml`, `ext-mbstring` and `ext-tokenizer` installed.
+- PHP 7.1.3, you'll also need `ext-gd`, `ext-simplexml`, `ext-xml`, `ext-mbstring` and `ext-tokenizer` installed.
 - [Composer][1]
 - APCu or Redis for caching.
-- A database driver for your DB, such as MySQL, PostgreSQL or SQLite.
+- A database driver for your DB such as; MySQL, PostgreSQL or SQLite.
 - Git
 
 > **SQLite**
@@ -30,11 +29,7 @@ appreciated! You may need some extra dependencies; depending on what you're look
 Our CSS is compiled from SCSS, so to compile this you will need the following:
 
 - Node.js
-- NPM
-- Bower
-- Gulp
-
-
+- NPM or Yarn
 
 [1]: https://getcomposer.org/
 [2]: https://dev.mysql.com/doc/refman/5.7/en/time-zone-support.html

package.json

@@ -19,7 +19,6 @@
     "es5-shim": "^4.5.9",
     "flatpickr": "^4.5.0",
     "github-markdown-css": "^2.3.0",
-    "gulp": "^3.9.1",
     "ionicons": "~2.0",
     "jquery": "^2.2.4",
     "jquery-minicolors": "^2.1.10",