Ready event fix, YouTube play event fix, docs update

package.json

@@ -1,6 +1,6 @@
 {
     "name": "plyr",
-    "version": "3.0.0-beta.15",
+    "version": "3.0.0-beta.16",
     "description": "A simple, accessible and customizable HTML5, YouTube and Vimeo media player",
     "homepage": "https://plyr.io",
     "main": "./dist/plyr.js",
@@ -9,22 +9,22 @@
     "style": "./dist/plyr.css",
     "devDependencies": {
         "babel-core": "^6.26.0",
-        "babel-eslint": "^8.2.1",
+        "babel-eslint": "^8.2.2",
         "babel-plugin-external-helpers": "^6.22.0",
         "babel-preset-env": "^1.6.1",
         "del": "^3.0.0",
-        "eslint": "^4.18.0",
+        "eslint": "^4.18.2",
         "eslint-config-airbnb-base": "^12.1.0",
         "eslint-config-prettier": "^2.9.0",
-        "eslint-plugin-import": "^2.8.0",
+        "eslint-plugin-import": "^2.9.0",
         "git-branch": "^1.0.0",
         "gulp": "^3.9.1",
-        "gulp-autoprefixer": "^4.1.0",
+        "gulp-autoprefixer": "^5.0.0",
         "gulp-better-rollup": "^3.0.0",
         "gulp-clean-css": "^3.9.2",
         "gulp-concat": "^2.6.1",
         "gulp-filter": "^5.1.0",
-        "gulp-open": "^2.1.0",
+        "gulp-open": "^3.0.0",
         "gulp-rename": "^1.2.2",
         "gulp-replace": "^0.6.1",
         "gulp-s3": "^0.11.0",
@@ -39,12 +39,12 @@
         "rollup-plugin-commonjs": "^8.3.0",
         "rollup-plugin-node-resolve": "^3.0.3",
         "run-sequence": "^2.2.1",
-        "stylelint": "^9.0.0",
-        "stylelint-config-prettier": "^2.0.0",
-        "stylelint-config-sass-guidelines": "^4.1.0",
-        "stylelint-config-standard": "^18.1.0",
+        "stylelint": "^9.1.1",
+        "stylelint-config-prettier": "^2.1.0",
+        "stylelint-config-sass-guidelines": "^5.0.0",
+        "stylelint-config-recommended": "^2.1.0",
         "stylelint-order": "^0.8.1",
-        "stylelint-scss": "^2.3.0",
+        "stylelint-scss": "^2.4.0",
         "stylelint-selector-bem-pattern": "^2.0.0"
     },
     "keywords": ["HTML5 Video", "HTML5 Audio", "Media Player", "DASH", "Shaka", "WordPress", "HLS"],