chore: remove Bower support

Author: yauhenipakala

.gitignore

@@ -54,9 +54,6 @@ coverage
 # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
 
-# Bower dependency directory (https://bower.io/)
-bower_components
-
 # node-waf configuration
 .lock-wscript
 
@@ -164,4 +161,4 @@ $RECYCLE.BIN/
 # Windows shortcuts
 *.lnk
 
-# End of https://www.gitignore.io/api/vim,node,macos,windows,sublimetext,visualstudiocode
+# End of https://www.gitignore.io/api/vim,node,macos,windows,sublimetext,visualstudiocode

README.md

@@ -6,12 +6,6 @@
 
 ## Install
 
-### Bower
-
-```
-bower install highlightjs-line-numbers.js
-```
-
 ### Npm
 
 ```