Delete unused variable
Categorize rules
Add endwise rule

For example in ruby, you type `def hoge()<CR>` then you get

def hoge()
  #
end
If syntax is empty, fallback to syntax on the left character
Fix: no autocmd!
Fix: g:lexima_no_map_to_escape does not work
Add map hook feature
Clear rules when lexima#init()
Update themisrc: set noswapfile
Fix: g:lexima_no_default_rules does not work
Refactor lexima's initialization process
Remove unused autocmd
Rename lexima#init() to lexima#set_default_rules()
Fix: newline leave rules are in incorrect category
Enable endwise-rule by default
Update doc