Add support for Markdown
Use metadata to specify note title and tags

Use a metadata block at the top of a note to specify the title and tags
Metadata snippet

Snippet for inserting Evernote metadata block to plain text, markdown,
and multimarkdown files
Markdown and metadata usage

Added Markdown and metadata usage infro to the readme
Merge pull request #12 from oparrish/markdown

Markdown and Title/tag Metadata support