docs: add getting started section

README.md

@@ -14,3 +14,28 @@ Unlatched | Whenever | Latched
 Latched | < 500ms | Locked
 Latched | >= 500ms | Unlatched
 Locked | Whenever | Unlatched
+
+## Getting Started
+
+### Build
+
+```sh
+cargo build --release
+```
+
+Optionally place the binary in /usr/local/bin/
+
+```sh
+mkdir -p /usr/local/bin
+cp ./target/release/lollipop /usr/local/bin/lollipop
+```
+
+### Run
+
+```sh
+sudo lollipop || sudo ./target/release/lollipop
+```
+
+## Systemd service
+
+Coming soon