Added more text extensions and give the ability to add in the config.

Using the 'idf_extra_text_ext' configuration variable you can add more
text extensions.

src/IDF/Views/Source.php

@@ -401,7 +401,8 @@ class IDF_Views_Source
         if (0 === strpos($fileinfo[0], 'text/')) {
             return true;
         }
-        $ext = 'mdtext php js cpp php-dist';
+        $ext = 'mdtext php js cpp php-dist h gitignore sh py pl rb '
+            .Pluf::f('idf_extra_text_ext', '');
         return (in_array($fileinfo[2], explode(' ', $ext)));
     }
 

src/IDF/conf/idf.php-dist

@@ -190,5 +190,9 @@ $cfg['allowed_scm'] = array('git' => 'IDF_Scm_Git',
                             'mercurial' => 'IDF_Scm_Mercurial',
                             );
 
-$cfg['idf_mimetypes_db'] = '/etc/mime.types';
+# If you want to use another memtypes database
+# $cfg['idf_mimetypes_db'] = '/etc/mime.types';
+
+# Extra text files when displaying source
+# $cfg['idf_extra_text_ext'] = 'ext1 ext2 ext3';
 return $cfg;