docs: Add language server and neovim setup instructions (#56)

* docs(language-server): add contextive language server installation guide

* docs(neovim): add neovim language server client configuration guide

README.md

@@ -72,14 +72,68 @@ The following list of features is a draft proposal of the vision at the start of
 
 ## Installation
 
-### Visual Studio Code
+### All in one IDE Plugins
+
+Contextive language server does not need to be installed separately.
+
+#### Visual Studio Code
 
 Open Visual Studio Code, launch the quick open (`Ctrl+P`) and then enter `ext install devcycles.contextive`.  OR, search `contextive` in the extensions side-bar.
 
 Visit the [Contextive Marketplace](https://marketplace.visualstudio.com/items?itemName=devcycles.contextive) page for details.
 
 Check the extension [README](src/vscode/contextive/README.md) for usage instructions.
 
+### Language Server Configurations
+
+#### Installing Contextive Language Server
+
+To install the language server, you need to do it manually from GitHub releases assets. This is necessary for users who are not using the Contextive VSCode extension and Visual Studio Code.
+
+##### 1. Download the appropriate zip file for your operating system and architecture:
+
+```shell
+curl -L https://github.com/dev-cycles/contextive/releases/download/<version>/Contextive.LanguageServer-<os>-<arch>-<version>.zip -o Contextive.LanguageServer-<os>-<arch>-<version>.zip
+```
+
+##### 2. Unzip the Contextive.LanguageServer and copy the file into a folder that is included in your system's PATH:
+
+The $HOME/bin directory has been created beforehand and is included in the system's PATH.
+
+```shell
+unzip Contextive.LanguageServer-<os>-<arch>-<version>.zip -d contextive-language-server
+cp contextive-language-server/Contextive.LanguageServer $HOME/bin
+```
+
+##### 3. Verify that Contextive.LanguageServer is found in the PATH. A non-zero exit code indicates that the language server was not found in the PATH:
+
+```shell
+command -v Contextive.LanguageServer
+```
+
+The command should return the absolute path to the binary if it's found in the system PATH.
+
+#### Neovim
+
+How to configure Neovim with lua modules: https://neovim.io/doc/user/lua-guide.html#lua-guide-config
+
+Use lspconfig to create a custom contextive language server configuration and initialize the language server by calling the setup function. The following lua snippet needs to be included in the `init.lua` file either directly or from another lua module like `lspconfigs.lua`.
+
+```lua
+local lspconfig = require("lspconfig")
+
+local lspconfig_configs = require("lspconfig.configs")
+
+lspconfig_configs.contextive = {
+  default_config = {
+    cmd = { "Contextive.LanguageServer" },
+    root_dir = lspconfig.util.root_pattern('.contextive', '.git'),
+  },
+}
+
+lspconfig.contextive.setup {}
+```
+
 ### Others
 
 Coming soon!
@@ -94,4 +148,4 @@ The Contextive logo is based (with extreme gratitude!) on the `Bibliophile` imag
 
 ## License
 
-This project is licensed under the [MIT](https://choosealicense.com/licenses/mit/) license.  See [LICENSE](LICENSE).
+This project is licensed under the [MIT](https://choosealicense.com/licenses/mit/) license.  See [LICENSE](LICENSE).