Add a guide on how to get a standalone project working, not just the examples

[pvini07BR]

I got the examples working and all, but there isn't a single guide on how to make a standalone project with cargo 3ds new work. All this command does is create a barebones rust project, with no libctru dependency whatsoever. The ctru-rs isn't on crates.io, so I assume I have to clone the repo and add it in the project manually. But even that didn't work. I tried adding this to Cargo.toml of the project:

[dependencies]
ctru-rs = { path = "ctru-rs/ctru-rs" }

and it throws this error when running cargo 3ds run or cargo 3ds build:

[pvini07br@DESKTOP-TISK433 rust-teste]$ cargo 3ds run
Warning: unable to check if `ctru` debuginfo should be linked: unable to parse `--unit-graph` json: EOF while parsing a value at line 1 column 0
stderr: `    Updating crates.io index
    Updating git repository `https://github.com/rust3ds/pthread-3ds.git`
    Updating git repository `https://github.com/rust3ds/shim-3ds.git`
    Updating git repository `https://github.com/rust3ds/ctru-rs.git`
error: failed to select a version for `ctru-sys`.
    ... required by package `pthread-3ds v0.1.0 (https://github.com/rust3ds/pthread-3ds.git#5d9e47ae)`
    ... which satisfies git dependency `pthread-3ds` of package `ctru-rs v0.7.1 (/home/pvini07br/rust-teste/ctru-rs/ctru-rs)`
    ... which satisfies path dependency `ctru-rs` of package `teste v0.1.0 (/home/pvini07br/rust-teste)`
versions that meet the requirements `*` are: 0.5.0

package `ctru-sys` links to the native library `ctru`, but it conflicts with a previous package which links to `ctru` as well:
package `ctru-sys v0.5.0 (/home/pvini07br/rust-teste/ctru-rs/ctru-sys)`
    ... which satisfies path dependency `ctru-sys` of package `ctru-rs v0.7.1 (/home/pvini07br/rust-teste/ctru-rs/ctru-rs)`
    ... which satisfies path dependency `ctru-rs` of package `teste v0.1.0 (/home/pvini07br/rust-teste)`
Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "ctru"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.

failed to select a version for `ctru-sys` which could resolve this conflict
`
    Updating crates.io index
    Updating git repository `https://github.com/rust3ds/pthread-3ds.git`
    Updating git repository `https://github.com/rust3ds/shim-3ds.git`
    Updating git repository `https://github.com/rust3ds/ctru-rs.git`
error: failed to select a version for `ctru-sys`.
    ... required by package `pthread-3ds v0.1.0 (https://github.com/rust3ds/pthread-3ds.git#5d9e47ae)`
    ... which satisfies git dependency `pthread-3ds` of package `ctru-rs v0.7.1 (/home/pvini07br/rust-teste/ctru-rs/ctru-rs)`
    ... which satisfies path dependency `ctru-rs` of package `teste v0.1.0 (/home/pvini07br/rust-teste)`
versions that meet the requirements `*` are: 0.5.0

package `ctru-sys` links to the native library `ctru`, but it conflicts with a previous package which links to `ctru` as well:
package `ctru-sys v0.5.0 (/home/pvini07br/rust-teste/ctru-rs/ctru-sys)`
    ... which satisfies path dependency `ctru-sys` of package `ctru-rs v0.7.1 (/home/pvini07br/rust-teste/ctru-rs/ctru-rs)`
    ... which satisfies path dependency `ctru-rs` of package `teste v0.1.0 (/home/pvini07br/rust-teste)`
Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "ctru"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.

failed to select a version for `ctru-sys` which could resolve this conflict

[FenrirWolf]

Are you using the most recent version of cargo 3ds? Older versions had a bug where it didn't actually set up main.rs and Cargo.toml the way it's supposed to.

[pvini07BR]

Are you using the most recent version of cargo 3ds? Older versions had a bug where it didn't actually set up main.rs and Cargo.toml the way it's supposed to.

I believe so. I downloaded cargo 3ds directly with cargo install, as the guide stated.

[FenrirWolf]

Aah. So it turns out that the current release on crates.io doesn't actually have the fix yet. I'll have to see if I can cut a release later, but in the meantime you can compile it from the main branch by running cargo install --locked --git https://github.com/rust3ds/cargo-3ds