chore: add MIT license and CI badge

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: SpollaL

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 SpollaL
+
+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.

README.md

@@ -1,5 +1,8 @@
 # datasight.nvim
 
+[![CI](https://github.com/SpollaL/datasight.nvim/actions/workflows/ci.yml/badge.svg)](https://github.com/SpollaL/datasight.nvim/actions/workflows/ci.yml)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
+
 A Neovim plugin that opens CSV and Parquet files in [datasight](https://github.com/SpollaL/datasight) — a fast terminal viewer with vim-style navigation, filtering, sorting, plotting, and group-by.
 
 ![demo](https://raw.githubusercontent.com/SpollaL/Datasight/main/.github/assets/demo.gif)