add demo + update readme

Author: evesdropper

README.md

@@ -1,15 +1,35 @@
 # LuaSnip-LaTeX-Snippets
 
-A set of preconfigured snippets for LaTeX for the snippet engine LuaSnip.
+A set of preconfigured snippets for LaTeX for the snippet engine [LuaSnip](https://github.com/L3MON4D3/LuaSnip).
 
-**Warning:** This is currently *not* working as something to install right out of the box.
+![demo](/assets/demo.mp4)
 
-Ideally would like to expand this to more languages, allow for better user experience in the future; feel free to make a PR to help contribute your own ideas.
+## Installation
+
+Use the package manager of your choice, or don't.
+
+**Lazy.nvim**
+```lua
+{
+    "evesdropper/luasnip-latex-snippets.nvim",
+},
+```
+
+**Packer.nvim**
+```lua
+use {
+    "evesdropper/luasnip-latex-snippets.nvim",
+},
+```
+
+## Development Plans
+
+Of course, add more snippets. Ideally would also like to expand this to more languages, allow for better user experience in the future; feel free to make a PR to help contribute your own ideas.
 
 ## Acknowledgements
 Some similar snippet resources:
 - [friendly-snippets](https://github.com/rafamadriz/friendly-snippets/)
 - [LuaSnip-snippets.nvim](https://github.com/molleweide/LuaSnip-snippets.nvim)
 - [Gilles Castel's LaTeX Snippets](https://github.com/gillescastel/latex-snippets)
 
-Additionally, I would like to thank Max Mehta for bringing up the idea of creating this plugin.
+Additionally, I would like to thank Max Mehta for bringing up the idea of creating this plugin and the creator of LuaSnip, [L3MON4D3](https://github.com/L3MON4D3), for helping me debug some of the early stages of the plugin.