Update Jekyll to 1.5.0.

The 1.4.3 Windows bug is fixed, plus the encoding workaround isn't needed anymore.

.travis.yml

@@ -14,7 +14,7 @@ after_script:
   - if [ "$TWBS_TEST" = validate-html ]; then time ./test-infra/s3_cache.py upload rubygems pseudo_Gemfile.lock $(rvm gemdir); fi
 env:
   global:
-    - JEKYLL_VERSION: 1.4.2
+    - JEKYLL_VERSION: 1.5.0
     - SAUCE_USERNAME: bootstrap
     - secure: "pJkBwnuae9dKU5tEcCqccfS1QQw7/meEcfz63fM7ba7QJNjoA6BaXj08L5Z3Vb5vBmVPwBawxo5Hp0jC0r/Z/O0hGnAmz/Cz09L+cy7dSAZ9x4hvZePSja/UAusaB5ogMoO8l2b773MzgQeSmrLbExr9BWLeqEfjC2hFgdgHLaQ="
     - secure: "gqjqISbxBJK6byFbsmr1AyP1qoWH+rap06A2gI7v72+Tn2PU2nYkIMUkCvhZw6K889jv+LhQ/ybcBxDOXHpNCExCnSgB4dcnmYp+9oeNZb37jSP0rQ+Ib4OTLjzc3/FawE/fUq5kukZTC7porzc/k0qJNLAZRx3YLALmK1GIdUY="

README.md

@@ -63,10 +63,9 @@ Bootstrap's documentation, included in this repo in the root directory, is built
 
 ### Running documentation locally
 
-1. If necessary, [install Jekyll](http://jekyllrb.com/docs/installation) (requires v1.x).
+1. If necessary, [install Jekyll](http://jekyllrb.com/docs/installation) (requires v1.5.x).
   - **Windows users:** Read [this unofficial guide](https://github.com/juthilo/run-jekyll-on-windows/) to get Jekyll up and running without problems. We use Pygments for syntax highlighting, so make sure to read the sections on installing Python and Pygments.
 2. From the root `/bootstrap` directory, run `jekyll serve` in the command line.
-  - **Windows users:** While we use Jekyll's `encoding` setting, you might still need to change the command prompt's character encoding ([code page](http://en.wikipedia.org/wiki/Windows_code_page)) to UTF-8 so Jekyll runs without errors. For Ruby 2.0.0, run `chcp 65001` first. For Ruby 1.9.3, you can alternatively do `SET LANG=en_EN.UTF-8`.
 3. Open <http://localhost:9001> in your browser, and voilà.
 
 Learn more about using Jekyll by reading its [documentation](http://jekyllrb.com/docs/home/).