Update README.md

Author: tomasbonco

README.md

@@ -6,9 +6,9 @@ This is browser extension for Chrome / Firefox / Opera (and maybe IE as well :)
 
 ## Installation
 
-Chrome
-Firefox
-Opera
+[Chrome](https://chrome.google.com/webstore/detail/gitlab-tree-view/pijacafkghdlolapcjpmiodgbnpinicn)
+● Firefox (soon)
+● Opera (soon)
 
 
 ## Contribution
@@ -18,4 +18,4 @@ Star, if you like :) Open an issue, if you find a bug or you miss something. Sen
 
 ## License
 
-MIT 
+MIT