Updated What's Included? (markdown)

What's-Included?.md

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+# What’s included?
+
+LunarVim provides neovim configuration files that take advantage of
+tree-sitter and language server protocol. The configuration is written
+in lua.
+
+## Why do I want tree-sitter and LSP?
+
+- Normally, an editor uses regular expression parsing for things like
+  highlighting and checking the syntax of your file. Each time you make
+  a change, the editor must re-parse the entire file. Tree-sitter, on
+  the other hand, transforms text into a syntax tree. Each time you make
+  a change, only the parts of the code that change need to be parsed.
+  This greatly improves the speed of parsing. This can make a huge
+  difference when editing large files.
+
+- Neovim 0.5 including language server protocol means your editor can
+  provide: code actions, completions, formatting, navigating to
+  definitions, renaming, etc. The language server only has to be written
+  once and will work on any editor that supports LSP. Any improvements
+  made to the language server will immediately be used by all editors
+  that support LSP.