Note title bug when using markdown syntax for h1.

[SMontgomery]

Title 1
=======

# Title 2

Both of the above lines are rendered as h1 but the title will actually be Title 2.

I would expect the first h1 to be the title.

[sosukesuzuki]

Thank you for reporting @SMontgomery ! I knew it for the first time. I'll fix it.

[sosukesuzuki]

Hi, @SMontgomery ! This bug was fixed by pull request #510.

[kazup01]

Great work @sosukesuzuki !