Update license info

Cargo.toml

 [package]
-name = "musicbox"
+name = "micro_musicbox"
 version = "0.2.0-pre.1"
 edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+license = "Apache-2.0"
+authors = ["Louis Capitanchik <louis@microhacks.co.uk>"]
+repository = "https://lab.lcr.gr/microhacks/micro_bevy_musicbox"
+description = "Opinionated service interface for bevy_kira_audio"
 
 [dependencies]
 bevy = { version = "0.8", default-features = false }
 bevy_kira_audio = { version = "0.11", features = ["mp3"] }
 serde = "1"
-serde_json = "1"
\ No newline at end of file