syncing some updates from bootstrap v4

.travis.yml

@@ -4,7 +4,7 @@ git:
   depth: 10
 node_js:
   - "4"
-  - "stable"
+  - "5"
 before_install:
   - rvm install 2.2.2
   - rvm use 2.2.2 --fuzzy
@@ -22,11 +22,12 @@ install:
   - npm install -g bower
   - bower install
 
-cache:
-  directories:
-    - node_modules
-    - vendor/bundle
-    - bower-components
+# Caching disabled due to https://github.com/travis-ci/travis-ci/issues/5092
+#cache:
+#  directories:
+#    - node_modules
+#    - vendor/bundle
+#    - bower-components
 
 addons:
   sauce_connect:

Gemfile

@@ -1,9 +1,9 @@
 source 'https://rubygems.org'
 
 group :development, :test do
-  gem 'jekyll', '~> 3.0.0'
+  gem 'jekyll', '~> 3.0.1'
   gem 'jekyll-redirect-from', '~> 0.9.0'
   gem 'jekyll-sitemap', '~> 0.9.0'
   gem 'sass', '~> 3.4.19'
-  gem 'scss_lint', '~> 0.42.2'
+  gem 'scss_lint', '~> 0.43'
 end

Gemfile.lock

@@ -32,7 +32,7 @@ GEM
     rouge (1.10.1)
     safe_yaml (1.0.4)
     sass (3.4.19)
-    scss_lint (0.42.2)
+    scss_lint (0.43.2)
       rainbow (~> 2.0)
       sass (~> 3.4.15)
 
@@ -40,8 +40,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 3.0.0)
+  jekyll (~> 3.0.1)
   jekyll-redirect-from (~> 0.9.0)
   jekyll-sitemap (~> 0.9.0)
   sass (~> 3.4.19)
-  scss_lint (~> 0.42.2)
+  scss_lint (~> 0.43)

Gruntfile.js

@@ -16,19 +16,33 @@ module.exports = function (grunt) {
   var mq4HoverShim = require('mq4-hover-shim');
   var autoprefixer = require('autoprefixer')({
     browsers: [
-      'Android 2.3',
-      'Android >= 4',
-      'Chrome >= 35',
-      'Firefox >= 31',
+      //
+      // Official browser support policy:
+      // http://v4-alpha.getbootstrap.com/getting-started/browsers-devices/#supported-browsers
+      //
+      'Chrome >= 35', // Exact version number here is kinda arbitrary
+      // Rather than using Autoprefixer's native "Firefox ESR" version specifier string,
+      // we deliberately hardcode the number. This is to avoid unwittingly severely breaking the previous ESR in the event that:
+      // (a) we happen to ship a new Bootstrap release soon after the release of a new ESR,
+      //     such that folks haven't yet had a reasonable amount of time to upgrade; and
+      // (b) the new ESR has unprefixed CSS properties/values whose absence would severely break webpages
+      //     (e.g. `box-sizing`, as opposed to `background: linear-gradient(...)`).
+      //     Since they've been unprefixed, Autoprefixer will stop prefixing them,
+      //     thus causing them to not work in the previous ESR (where the prefixes were required).
+      'Firefox >= 31', // Current Firefox Extended Support Release (ESR)
       // Note: Edge versions in Autoprefixer & Can I Use refer to the EdgeHTML rendering engine version,
       // NOT the Edge app version shown in Edge's "About" screen.
       // For example, at the time of writing, Edge 20 on an up-to-date system uses EdgeHTML 12.
       // See also https://github.com/Fyrd/caniuse/issues/1928
       'Edge >= 12',
       'Explorer >= 9',
+      // Out of leniency, we prefix these 1 version further back than the official policy.
       'iOS >= 7',
-      'Opera >= 12',
-      'Safari >= 7.1'
+      'Safari >= 7.1',
+      // The following remain NOT officially supported, but we're lenient and include their prefixes to avoid severely breaking in them.
+      'Android 2.3',
+      'Android >= 4',
+      'Opera >= 12'
     ]
   });
 

_config.yml

@@ -1,7 +1,3 @@
-#baseurl: "/bootstrap-material-design"
-#url: "http://fezvrasta.github.io"
-#url: "http://rosskevin.github.io"
-
 include:
   - .nojekyll
 
@@ -24,8 +20,10 @@ source:           docs
 destination:      _gh_pages
 host:             0.0.0.0
 port:             9001
-url:              http://fezvrasta.github.io/bootstrap-material-design
+#baseurl: "/bootstrap-material-design"
+#url: "http://fezvrasta.github.io"
 encoding:         UTF-8
+exclude:          [assets/scss/]
 
 gems:
   - jekyll-redirect-from

docs/components/input-group.md

@@ -108,6 +108,20 @@ Buttons in input groups are a bit different and require one extra level of nesti
     </div>
   </div>
 </div>
+<br>
+<div class="row">
+  <div class="col-lg-offset-3 col-lg-6">
+    <div class="input-group">
+      <span class="input-group-btn">
+        <button class="btn btn-secondary" type="button">Hate it</button>
+      </span>
+      <input type="text" class="form-control" placeholder="Product name">
+      <span class="input-group-btn">
+        <button class="btn btn-secondary" type="button">Love it</button>
+      </span>
+    </div>
+  </div>
+</div>
 {% endexample %}
 
 ## Buttons with dropdowns

grunt/npm-shrinkwrap.json

@@ -159,8 +159,8 @@
       "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-5.8.34.tgz"
     },
     "babel-eslint": {
-      "version": "4.1.5",
-      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-4.1.5.tgz"
+      "version": "4.1.6",
+      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-4.1.6.tgz"
     },
     "babel-jscs": {
       "version": "2.0.5",
@@ -231,8 +231,8 @@
       "resolved": "https://registry.npmjs.org/babylon/-/babylon-5.8.34.tgz"
     },
     "balanced-match": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-0.2.1.tgz"
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-0.3.0.tgz"
     },
     "basic-auth": {
       "version": "1.0.3",
@@ -265,8 +265,8 @@
       "resolved": "https://registry.npmjs.org/boom/-/boom-0.4.2.tgz"
     },
     "brace-expansion": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.1.tgz"
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.2.tgz"
     },
     "breakable": {
       "version": "1.0.0",