Allow configuring master slide by header level

[k0kubun]

Closes #12 (by configuring header-only master slide for specific level)

Abstract

• Introduce .md2key to configure md2key
  • You can configure master slide of cover slide
  • You can configure master slide of other slides with specific header level
• Add md2key init subcommand to generate a config template to current directory
  • Configuration file is searched from ./.md2key and ~/.md2key.

Example

Input

# Cover slide
Takashi Kokubun

# Level 1
one

## Level 2
two

### !!! Level 3 !!!

.md2key

For keynote template azusa-colors

masters:
  - name: "Cyan Title"
    cover: true
  - name: "Cyan Heading & Body"
    template: 1
  - name: "Cyan White Heading & Body"
    template: 2
  - name: "Cyan White Heading"
    template: 3

Output