escape markdown

[koron]

when execute scripts/vimmagazinetools.rb generate, it may generate wrong markdown (see bdd092b).

it should be fixed that script.

[koron]

mdescape()

vim-jp.github.io/scripts/vimmagazinetools.rb

Lines 74 to 84 in 6226ac1

	def mdescape(s)
	s = s.gsub("\\", "\\\\\\\\")
	s = s.gsub("<", "\\<")
	s = s.gsub("[", "\\[")
	s = s.gsub("]", "\\]")
	s = s.gsub("`", "&#x60;")
	s = s.gsub("_", "&#x5f;")
	s = s.gsub("^", "&#x5e;")
	s = s.gsub("*", "&#x2a;")
	return s
	end

[koron]

no longer valid