feat(index): support m4v files, video format used when exporting from Apple Photos

src/components/index/glob.js

@@ -3,7 +3,7 @@ const readdir = require('readdir-enhanced')
 const warn = require('debug')('thumbsup:warn')
 
 const PHOTO_EXT = ['bmp', 'gif', 'jpg', 'jpeg', 'png', 'tif', 'tiff', 'webp']
-const VIDEO_EXT = ['3gp', 'flv', 'm2ts', 'mkv', 'mp4', 'mov', 'mts', 'ogg', 'ogv', 'webm']
+const VIDEO_EXT = ['3gp', 'flv', 'm2ts', 'm4v', 'mkv', 'mp4', 'mov', 'mts', 'ogg', 'ogv', 'webm']
 const MEDIA_GLOB = '**/*.{' + PHOTO_EXT.join(',') + ',' + VIDEO_EXT.join(',') + '}'
 
 /*