docs: add docs

Signed-off-by: kjuulh <contact@kjuulh.io>

docs/installation.md

@@ -0,0 +1,29 @@
+# Installation
+
+## Cargo version
+
+```bash
+cargo install cuddle-please
+# or 
+cargo binstall cuddle-please # if using binstall
+```
+
+More to come as the project matures.
+
+## Development version
+
+### Cuddle
+
+[Cuddle](https://git.front.kjuulh.io/kjuulh/cuddle) is a script and configuration management tool, it is by far the easiest approach for building the development version of cuddle-please, but optional.
+
+```bash
+cuddle x build:release	
+# or docker
+cuddle x build:docker:release
+```
+
+### Cargo
+
+```bash
+cargo build --release -p cuddle_cli
+```