Frontmatter for readinglist

Reverted readinglist frontmatter to standard format with yaml delimiters
and bracketed tags

.vim/templates/rlfm

@@ -1,12 +1,14 @@
 :insert
+---
 filename:
 filecreated: 
 fileupdated: 
-filetags: #readinglist
+filetags: [readinglist]
 booktitle: 
 bookauthor: 
 bookstarted: 
 bookfinished: 
+---
 
 # booktitle