add some docs

doc/plugins.md

@@ -0,0 +1,29 @@
+# List of plugins for NixVim
+
+## Colorschemes
+### Gruvbox
+
+Just set `enable` to use the colorscheme.
+
+```nix
+programs.nixvim.colorscheme.gruvbox.enable = true;
+```
+
+## Status lines
+### Lightline
+Lightline is a small and customizable status line for vim. It can be enabled
+with `programs.nixvim.plugins.lightline.enable`, and it will try to use the
+colorscheme set by the user. If you want to manually override this, set
+`programs.nixvim.plugins.lightline.colorscheme` to the name of the colorscheme
+to use.
+
+```nix
+programs.nixvim.plugins.lightline = {
+  enable = true; # Enable this plugin
+
+  # This can be set to null to reset. Defaults to global colorscheme
+  colorscheme = "wombat";
+
+  # ...
+};
+```

example.nix

@@ -1,4 +1,4 @@
-{...}:
+{ pkgs, ... }:
 {
   programs.nixvim = {
     # This just enables NixVim. 
@@ -18,8 +18,7 @@
     leader = ",";
 
     # We can create maps for every mode!
-    # There is .normal, .insert, .visual and .operator
-    # These are aliased to .n, .i, .v and .o
+    # There is .normal, .insert, .visual, .operator, etc!
 
     # We can also set options:
     options = {