Update README.md

Author: Chrisvin

README.md

@@ -9,6 +9,7 @@ Easy Stack Search is a lightweight extension that makes searching Stack sites li
 | :-: | :-: |
 | [Google Chrome](https://chrome.google.com/webstore/detail/easy-stack-search/clcbdgojnikjpnplbflmmckolehpenil?hl=en-GB&authuser=0) | Chrome 35+ |
 | Microsoft Edge | Edge 79+ |
+| Opera | All versions |
 
 ## Feature list:
 1. Use "s" Omnibox command to search in stackoverflow from address-bar. 
@@ -25,3 +26,31 @@ Easy Stack Search is a lightweight extension that makes searching Stack sites li
 6. Add additional filters that will be shown as omnibox suggestions.
 
 7. Change default URL to search other sites.
+
+## Bugs and Feedback
+For bugs, suggestions and questions please use [Github Issues](https://github.com/Chrisvin/EasyStackSearchExtension/issues).
+
+## License
+```
+MIT License
+
+Copyright (c) 2019 Jem
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```