Document Maven dependencies README.textile

[jukzi]

please document the keywords for maven added with #115
in

targetplatform-dsl/README.textile

Line 88 in 67c0f88

Then, you define the locations of your p2 repositories. You can add as many locations as your want to your target. Location string must be URL, if your p2 repository is local, don't forget to put a @file:/@ URL.

see https://github.com/eclipse-cbi/targetplatform-dsl/blame/67c0f8838880eb0b36eb99b581f08615e56037d7/org.eclipse.cbi.targetplatform/src/main/java/org/eclipse/cbi/targetplatform/TargetPlatform.xtext#L52

[UdoW]

As I read the Xtext grammar correctly the documentation should look something like this for Maven artifacts:

maven central scope = test dependencyDepth = direct missingManifest = generate includeSources {
	dependency {
		groupId = "org.testcontainers"
		artifactId = "testcontainers"
		version = "1.19.0"
	}
}

At least this works for me and the generated target source looks like this:

    <location includeDependencyDepth="direct" includeDependencyScopes="test" includeSource="true" missingManifest="generate" type="Maven" label="central">
    <dependencies>
    	<dependency>
    		<groupId>org.testcontainers</groupId>
    		<artifactId>testcontainers</artifactId>
    		<version>1.19.0</version>
    		<type>jar</type>
    	</dependency>
    </dependencies>
    </location>

The Xtext grammar is here:

org.eclipse.cbi.targetplatform/src/main/java/org/eclipse/cbi/targetplatform/TargetPlatform.xtext

[jukzi]

@hannesN can you provide a documentation, please?