Migrate to Rust 2021 and fix Linux path issues

Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 name = "steam_randomiser"
-version = "0.2.0"
+version = "0.4.0"
 authors = ["Dimitri Belopopsky <dimitri@belopopsky.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
-description = "Randomly pick an installed Steam game!"
+description = "Randomly picks an installed Steam game!"
 readme = "README.md"
 homepage = "https://github.com/ShadowMitia/steam_randomiser"
 repository = "https://github.com/ShadowMitia/steam_randomiser"
@@ -15,10 +15,11 @@ categories = ["command-line-utilities"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-dirs = "3.0.1"
+dirs = "4.0.0"
 rand = "0.8.3"
 which = "4.1.0"
-clap = "3.0.0-beta.2"
+clap = "3.0.0-beta.5"
+
 
 [profile.release]
 lto = true

README.md

@@ -1,12 +1,11 @@
 # Steam Randomiser
 
-[![Readme Card](https://github-readme-stats.vercel.app/api/pin/?username=shadowmitia&repo=steam_randomiser)](https://github.com/anuraghazra/github-readme-stats)
+[![license shields.io](https://img.shields.io/github/license/shadowMitia/steam_randomiser)](https://github.com/ShadowMitia/steam_randomiser/blob/master/LICENSE.txt)
+[![GitHub stars badge shields.io](https://img.shields.io/github/stars/shadowMitia/steam_randomiser)](https://github.com/shadowMitia/steam_randomiser)
 
 Don't know what to play on [Steam](https://store.steampowered.com/)?
 
-Just run `Steam Randomiser` and it will randomly choose from one of your **installed** games!
-
-Perfect when you don't know which game to play from all of those bundles you've bought all these years!
+Just run [`Steam Randomiser`](https://github.com/shadowMitia/steam_randomiser) and it will randomly choose from one of your (numerous) **installed** games!
 
 ### Installation
 
@@ -29,11 +28,11 @@ And then play your awesome and randomly picked game!
 
 #### Supported systems
 
-|         | Vanilla | Flatpak |
-| ------- | :-----: | ------: |
-| Windows |   ✅    |     N/A |
-| MacOS   |   ❌    |     N/A |
-| Linux   |   ✅    |      ✅ |
+|         |         Vanilla         | Flatpak |
+| ------- | :---------------------: | ------: |
+| Windows |           ✅            |     N/A |
+| MacOS   | ❌ (experimental build) |     N/A |
+| Linux   |           ✅            |      ✅ |
 
 ## Development