Add examples to Cargo.toml and README.md

This commit includes [[examples]] in Cargo.toml and a more descriptive README.md

Cargo.toml

@@ -13,3 +13,6 @@ x11 = { version = "2", features = ["xlib"] }
 # examples/launcher
 pop-launcher = "1.0.3"
 serde_json = "1.0.70"
+
+[[example]]
+name = "launcher" # examples/launcher/main.rs

README.md

@@ -1,2 +1,14 @@
 # libcosmic
-WIP
+
+A framework to develop COSMIC applications.
+
+## Examples
+
+Run the following command to execute the examples:
+
+### Launcher
+```shell
+$ cargo run --example launcher
+```
+
+**WIP**