Bundle `cargo generate` temporarily for ease of installation

[alexcrichton]

💡 Feature description

One of the first steps in the getting started guide is to cargo install cargo-generate, but this can take quite some time and also be difficult to execute in all circumstances (OpenSSL issues, libgit2 issues, etc).

It'd be awesome if instead wasm-pack bundled the code for cargo-generate by default (by using a dependeny on the actual cargo-generate). That way we could have something like wasm-pack generate which is immediately available after downloading wasm-pack. Eventually this wouldn't be necessary if cargo generate becomes more first class, but we could have a note saying that it's just a temporary measure for now!

[ashleygwilliams]

i'd like to tackle this for 0.6.0 - this is blocked by getting libgit2 out of cargo generate and just requiring git as a prerequ (this ends up removing a lot of the grossness of installing cargo-generate)

[alexcrichton]

@ashleygwilliams oh wouldn't bundling this in precompiled binaries fix those issues? Using libgit2 is a big benefit for Windows users who don't always have git.exe installed in PATH

[ashleygwilliams]

oh. hrm. i think you're right. sorry. commented to early. i can have a PR for this today.

[drager]

I should be able to start working on this as soon as possible. Or are you tackling this @ashleygwilliams?

[ashleygwilliams]

@drager - i was hoping i could tackle this one? would that be ok?

[drager]

@ashleygwilliams: Yes of course!