Update README

README.md

@@ -1,3 +1,28 @@
 # source-link.lua
 
-View current file on configured git remote
+View the current line number of the current file on configured git remote.
+
+## Installation
+
+Call ``setup`` from your neovim configuration file:
+
+```lua
+...
+local source_link = require('source_link')
+
+source_link.setup()
+...
+
+```
+
+Optionally create a keybinding:
+
+```lua
+...
+local opts = { noremap = true, silent = true }
+
+vim.api.nvim_set_keymap('n', '<C-L>', '<cmd>:SourceOpen<CR>', opts)
+
+```
+
+Or call the command directly from Command mode: ``:SourceOpen``.