網路上已經有很多jekyll的各類教學，這邊主要是記錄在安裝上遇到的一些問題.
因為使用的平台是Mac OS，所以跟linux的安裝還是有些許的不同，我在執行$gem install jekyll時就有遇到問題
~/Documents/work » gem install jekyll
Fetching: public_suffix-3.0.0.gem (100%)
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.看上去是權限的問題，所以我就直接加上sudo，接著直接回我:
Fetching: public_suffix-3.0.0.gem (100%)
ERROR: Error installing jekyll:
public_suffix requires Ruby version >= 2.1.好的，看來內建的版本沒辦法直接安裝，在這邊我就直接下brew install ruby
因為下了brew upgrade ruby直接回我沒有安裝(?!)，不過這邊應該是指我個人用戶下沒有這個東西.
該裝的都裝好，總該沒問題了吧？
但是現實是很殘酷的，該出錯的地方就是會錯，工程師本命就是在解決問題，自然也會吸引一堆問題(x)
當jekyll裝好後要啟動的時候就出現問題:
$ jekyll serve
/usr/local/Cellar/ruby/2.4.2_1/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- bundler (LoadError)
from /usr/local/Cellar/ruby/2.4.2_1/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/lib/ruby/gems/2.4.0/gems/jekyll-3.6.2/lib/jekyll/plugin_manager.rb:48:in `require_from_bundler'
from /usr/local/lib/ruby/gems/2.4.0/gems/jekyll-3.6.2/exe/jekyll:11:in `<top (required)>'
from /usr/local/bin/jekyll:23:in `load'
from /usr/local/bin/jekyll:23:in `<main>'ok，果不其然，事情就是這樣發生了，還好也有人發生類似的問題，一樣要用gem安裝bundler:
$ sudo gem install bundler# 這個執行完會問密碼
$ bundle install
Password:
Installing jekyll-feed 0.9.2
Fetching minima 2.1.1
Installing minima 2.1.1
Bundle complete! 4 Gemfile dependencies, 22 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.最後就是啟動啦
$ bundle exec jekyll serv