Use YAML straight in the markdown file (closes #7)

Author: mrzool

README.md

@@ -17,8 +17,8 @@ To install pandoc on Mac OS X, run `brew install pandoc`. To install it on Linux
 
 ## Getting started
 
-1. Edit `details.yml` with your details, your recipient's details, and the desired settings.
-2. Open `letter.md` and write your letter in markdown.
+1. Open `letter.md` and fill the YAML frontmatter with your details, your recipient's details, optional subject line, and the desired settings.
+2. Write your letter in markdown below.
 3. Run `make` to compile the PDF.
 
 If a file named `signature.pdf` is present in the directory, the boilerplate will automatically print it after the letter's body as a final touch. Follow [this method](http://tex.stackexchange.com/a/32940/82423) to import your own signature.

details.yml

@@ -1,3 +1,26 @@
+---
+# subject: My life as a soldier
+author: F. Nietzsche
+city: Naumburg
+from:
+- Artillerieregiment, 8. Batt.
+- Nordstraße 15, Naumburg
+to:
+- Carl Freiherr von Gersdorff
+- Stresow-Kaserne I
+- Grenadierstraße 13–16
+- 13597 Spandau
+
+# Settings
+mainfont: Hoefler Text
+altfont: Helvetica Neue
+monofont: Courier
+lang: english
+fontsize: 10pt
+geometry: a4paper, left=35mm, right=35mm, top=50mm, bottom=25mm
+# letterhead: true
+---
+
 Dear Friend,
 
 I am a bombardier in the second mounted division of the Fourth Horse Artillery.

letter.md

@@ -1,4 +1,4 @@
-output.pdf : template.tex details.yml letter.md
+output.pdf : template.tex letter.md
 	pandoc $(filter-out $<,$^ ) -o $@ --latex-engine=xelatex --template=$<
 
 clean :