[Docs] Discrepancy in Gradle instruction between docs on Tribuo.org and GitHub README.md

Describe the bug

The Gradle tab in https://tribuo.org/#gradle says:

implementation ("org.tribuo:tribuo-all:4.0.1@pom") {
    transitive = true // for Groovy
    // isTransitive = true // for Kotlin
}

while the README on GitHub says:

api 'org.tribuo:tribuo-all:4.0.0@pom'

The former works in Gradle 6.5, the latter does not work, and gives the below error:

* What went wrong:
A problem occurred evaluating root project 'tribuo-classification'.
> Could not find method api() for arguments [org.tribuo:tribuo-all:4.0.1@pom] on object of 
type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

Expected behaviour

Both docs to refer to the same information. Also would help if there was a bit more context to the Gradle docs, i.e.:

dependencies {
    implementation ("org.tribuo:tribuo-all:4.0.1@pom")
    ....
}

[Craigacp]

We should probably change it to:

// for build.gradle
// for build.gradle.kts

I think that’s how the gradle daemon figures out what kind of file it is.

[Craigacp]

You’ve not uncommented the appropriate transitive flag, nor put it in the braces, so it only downloads the pom and thus fails to find the other bits. It should look like this:

implementation ("org.tribuo:tribuo-all:4.0.1@pom") {
    transitive = true
}

We have it as a pom dependency as otherwise the pom file that gradle generates for downstream deployment into maven repositories says that the tribuo-all dependency is a jar and it breaks maven projects which consume the library built with gradle.