Added global configuration option to enable raw output of bibtex entry.

Removed tag option for raw bibtex entry.
Added a note in the documentation on the usage of this option.

README.md

@@ -55,6 +55,8 @@ default configuration is as follows:
 
       replace_strings: true
       join_strings:    true
+      
+      use_raw_bibtex_entry: false
 
       details_dir:    bibliography
       details_layout: bibtex.html
@@ -76,6 +78,10 @@ The `source` option indicates where your bibliographies are stored;
 `bibliography` is the name of your default bibliography. For best results,
 please ensure that your Bibliography is encoded as ASCII or UTF-8.
 
+The `use_raw_bibtex_entry` option will disable parsing of Liquid tags that 
+are embedded in the Bibtex fields. This option provides a way to circumvent 
+the problem that the double braces functionality of BibTex is accidentally 
+parsed by Liquid, while it was intended to keep the exact capitalization style.
 
 ### Bibliographies
 

lib/jekyll/scholar/defaults.rb

@@ -23,6 +23,7 @@ module Jekyll
       'details_dir'           => 'bibliography',
       'details_layout'        => 'bibtex.html',
       'details_link'          => 'Details',
+      'use_raw_bibtex_entry'  => false,
 
       'bibliography_class'    => 'bibliography',
       'bibliography_template' => '{{reference}}',

lib/jekyll/scholar/utilities.rb

@@ -80,13 +80,9 @@ module Jekyll
           opts.on('-T', '--template TEMPLATE') do |template|
             @bibliography_template = template
           end
-
-          opts.on('-R', '--raw_bibtex') do |raw_bibtex|
-            @raw_bibtex = raw_bibtex
-          end
         end
 
-        argv = arguments.split(/(\B-[cCfqptTslomAR]|\B--(?:cited(_in_order)?|file|query|prefix|text|style|template|locator|offset|max|suppress_author|raw_bibtex|))/)
+        argv = arguments.split(/(\B-[cCfqptTslomA]|\B--(?:cited(_in_order)?|file|query|prefix|text|style|template|locator|offset|max|suppress_author|))/)
 
         parser.parse argv.map(&:strip).reject(&:empty?)
       end
@@ -182,7 +178,7 @@ module Jekyll
       end
 
       def raw_bibtex?
-        !!@raw_bibtex
+        config['use_raw_bibtex_entry']
       end
 
       def repository?