Merge pull request #7 from c-git/patch-1

Add rfd deps and link to alternate implementation

README.md

@@ -6,14 +6,29 @@ The web application can be accessed here:
 
 https://woelper.github.io/egui_pick_file/
 
-
 For native:
+
+On linux install dependencies of [rfd](https://docs.rs/rfd/latest/rfd/index.html) as applicable.
+Copied from https://docs.rs/rfd/latest/rfd/#linux--bsd-backends
+
+> GTK backend is used with the `gtk3` Cargo feature which is enabled by default. The GTK3
+> backend requires the C library and development headers to be installed to build RFD. The package
+> names on various distributions are:
+> | Distribution | Installation Command |
+> | --------------- | ------------ |
+> | Fedora | dnf install gtk3-devel |
+> | Arch | pacman -S gtk3 |
+> | Debian & Ubuntu | apt install libgtk-3-dev |
+
 `cargo run`
 
+
 For web:
 
 `rustup target add wasm32-unknown-unknown`
 
 `cargo install --locked trunk`
 
-`trunk serve --open`
+`trunk serve --open`
+
+There is also an alternate example implementation that uses [poll-promise](https://docs.rs/poll-promise/latest/poll_promise/) instead available [here](https://github.com/c-git/egui_file_picker_poll_promise)https://github.com/c-git/egui_file_picker_poll_promise.