Redo installation. (#17)

* Redo installation.

Servers which want to be auto installed should specify
skeleton[name].install()
and it will be automatically added to the list of installable servers.

- Add :LspInstall and :LspInstallInfo
- Auto generate docs for servers with .install() available.
- Add util.npm_installer
- Refactor utf8 capabilities common config into a single function
- Add contribution notes.
- Also expose util.base_install_dir for other installers potentially
- Fix tsserver's arguments and add javascript filetypes

1 files changed, 11 insertions, 3 deletions

diff --git a/scripts/docgen.lua b/scripts/docgen.lua
index 7acc8bb5..d58c5881 100644
--- a/scripts/docgen.lua
+++ b/scripts/docgen.lua
@@ -88,9 +88,17 @@ for _, k in ipairs(skeleton_keys) do
   end
   params.preamble = ""
   if tconf.docs then
-    params.preamble = table.concat(filter(
-    nilifempty(tconf.docs.description)
-    ), '\n\n')
+    local installation_instructions
+    if v.install then
+      installation_instructions = string.format("Can be installed in neovim with `:LspInstall %s`", k)
+    end
+    local preamble_parts = filter(
+      nilifempty(tconf.docs.description)
+      , installation_instructions
+    )
+    -- Insert a newline after the preamble if it exists.
+    if #preamble_parts > 0 then table.insert(preamble_parts, '') end
+    params.preamble = table.concat(preamble_parts, '\n')
   end
 
   local section = ([[