Update README and LICENSE (mmistakes#2367)

* Update README and LICENSE

* README: Replace RawGit with jsDelivr

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2019 Michael Rose and contributors
+Copyright (c) 2013-2020 Michael Rose and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -18,4 +18,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.

README.md

@@ -11,9 +11,9 @@ Minimal Mistakes is a flexible two-column Jekyll theme, perfect for building per
 
 **If you enjoy this theme, please consider [supporting me](https://www.paypal.me/mmistakes) to continue developing and maintaining it.**
 
-[![Support via PayPal](https://cdn.rawgit.com/twolfson/paypal-github-button/1.0.0/dist/button.svg)](https://www.paypal.me/mmistakes)
+[![Support via PayPal](https://cdn.jsdelivr.net/gh/twolfson/paypal-github-button@1.0.0/dist/button.svg)](https://www.paypal.me/mmistakes)
 
-**Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build.
+**Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll encounter `Unknown tag 'include_cached'` errors at build.
 
 [![Minimal Mistakes live preview][2]][1]
 
@@ -37,7 +37,7 @@ Minimal Mistakes is a flexible two-column Jekyll theme, perfect for building per
 
 ## Skins (color variations)
 
-This theme comes in nine different skins (including the default one).
+This theme comes in nine different skins (in addition to the default one).
 
 | `air` | `contrast` | `dark` |
 | --- | --- | --- |
@@ -198,7 +198,7 @@ To test the theme, run `bundle exec rake preview` and open your browser at `http
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2019 Michael Rose and contributors
+Copyright (c) 2013-2020 Michael Rose and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

docs/_docs/01-quick-start-guide.md

@@ -12,7 +12,7 @@ Minimal Mistakes has been developed as a [Gem-based theme](http://jekyllrb.com/d
 
 **If you enjoy this theme, please consider [supporting me](https://www.paypal.me/mmistakes) for developing and maintaining it.**
 
-[![Support via PayPal](https://cdn.rawgit.com/twolfson/paypal-github-button/1.0.0/dist/button.svg)](https://www.paypal.me/mmistakes)
+[![Support via PayPal](https://cdn.jsdelivr.net/gh/twolfson/paypal-github-button@1.0.0/dist/button.svg)](https://www.paypal.me/mmistakes)
 
 ## Installing the theme