add build instructions (#51)

.github/workflows/ci.yml

@@ -33,4 +33,4 @@ jobs:
           publish_dir: ./_site
           cname: cutter.re
           force_orphan: true
-          exclude_assets: ".bundle,.sass-cache,Gemfile*,.gitignore,.github"
+          exclude_assets: ".bundle,.sass-cache,Gemfile*,.gitignore,.github,README.md"

README.md

@@ -0,0 +1,20 @@
+# Cutter Website
+
+### How to build
+
+1. Install `ruby` following [official guide](https://www.ruby-lang.org/en/documentation/installation/).
+2. Install essential build tools (`build-essential` for linux & `Xcode cmdline tools` for macOS).
+3. Clone this repo:
+
+    `git clone --filter=blob:none https://github.com/rizinorg/cutter.re`
+4. Run the following:
+    ```sh
+    cd cutter.re
+    gem install bundler
+    bundle install
+    bundle exec jekyll serve
+    ```
+If all goes right, you should be able to access the site at http://127.0.0.1:4000/
+
+> [!NOTE]
+> [Cutter documentation](https://cutter.re/docs/) source resides in [cutter repo](https://github.com/rizinorg/cutter/tree/dev/docs) and can be built using [these instructions](https://cutter.re/docs/contributing/docs/building-docs.html) separately.